Where & How To Buy HSA/FSA Eligible Period Underwear
Learn whether period underwear is HSA or FSA eligible, when you may need an LMN, and how to purchase qualifying products using your healthcare benefits.
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Consumer resource articles from Flex
Are Pads HSA/FSA Eligible & Where Can You Buy Them?
Learn when and why menstrual pads are HSA and FSA eligible, which period products qualify, and how and where to buy pads using your HSA or FSA online.
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HSA Reimbursement Rules, Timelines, & How It Works
Learn how HSA reimbursement rules work, including timelines and time limits, eligibility, examples, and when and how to reimburse yourself from your HSA.
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HSA Withdrawal Rules, Taxes, and How To Do It Properly
We go over the HSA withdrawal rules, including when withdrawals are taxable, how to avoid penalties, and how to withdraw funds properly from your HSA.
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A Guide To HSA and Medicare Contributions & Eligibility
Learn how HSA eligibility works with Medicare, when contributions must stop, potential penalties, & how to use your HSA funds after enrolling in Medicare.
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HSA Family Coverage Rules: Spouses, Friends, Dependents
Learn the HSA family coverage rules and who qualifies as an HSA dependent. Find out if you can use your HSA for a spouse, children, and tax dependents.
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Can You Use Your HSA/FSA for Endurance Races?
Learn when endurance race fees, training costs, and recovery products may qualify for HSA/FSA. Understand how a Letter of Medical Necessity can make race expenses eligible.
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Medicare Flex Card Eligibility, Benefits, & Scams Guide
Learn what a Medicare flex card is, how it works, who qualifies, key benefits, whether you can have a card in addition to an HSA or FSA account or plan.
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Critical HSA Taxes & Deductions Questions Answered
We answer the most important questions asked about HSAs and taxes, including whether your HSA contributions are tax deductible and what you need to report.
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How To Invest HSA Funds To Strategically Grow Over Time
Learn how to invest your Health Savings Account (HSA) funds, understand key rules, and explore strategic options to grow your tax-free funds over time.
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Is Semaglutide HSA/FSA Eligible? (+ How to Buy Online)
Learn when semaglutide qualifies for HSA and FSA use, which medical conditions support eligibility, and how to buy programs with using your HSA/FSA funds.
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How & When You Can Use HSA/FSA for a Gym Membership
Learn when gym memberships qualify as HSA and FSA eligible, when you need a medical letter, and how to buy eligible memberships online with ease today.
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How To Buy HSA/FSA Eligible Tampons & When You Can
Find out when tampons qualify as HSA/FSA eligible, whether a medical letter is needed, and how to purchase eligible tampons online with your benefits.
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When & Where You Can Use Your HSA/FSA Funds For Pilates
Is pilates HSA or FSA eligible? Learn when pilates qualifies, if you need a Letter of Medical Necessity, and how to buy with HSA or FSA funds for classes.
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10 Surprising HSA/FSA Eligible Items You Can Buy Online
From sleep trackers to posture gear, here are 10 surprising HSA/FSA-eligible items your pre-tax dollars can cover, and where you can buy them online.
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Can You Lose Unspent HSA Money At Year End?: Explained
We explain why HSA money doesn’t expire at the end of the year, what happens to unspent funds, and creative ways to spend your HSA funds efficiently.
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Do HSA Funds Expire? (HSA Rollover Rules Explained)
Do HSA funds expire or follow a use it or lose it rule? Learn how HSA rollover works, how long funds last, and how to spend your HSA wisely & efficiently.
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When Are Supplements HSA/FSA Eligible + Where To Buy
Learn when supplements are HSA and FSA eligible, which medical conditions qualify, and how to buy approved supplements using your HSA or FSA directly.
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Best HSA/FSA Approved Shoes & When They Qualify
Learn which types of shoes qualify for HSA or FSA spending, which conditions apply, and how to buy eligible shoes online using your HSA or FSA account.
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When & How To Pay for Yoga Classes With Your HSA/FSA
Learn when yoga is HSA and FSA eligible, which conditions qualify, and how to pay for yoga classes or programs using your tax-advantaged health funds.
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Where To Get HSA/FSA Eligible Red Light Therapy
Learn when red light therapy is HSA and FSA eligible, what medical conditions qualify, and how to buy approved devices and services using your funds.
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Are Running Shoes HSA or FSA Eligible & Where to Buy Them
Learn when running shoes qualify as HSA/FSA eligible, which medical conditions require an LMN, and how to buy approved footwear easily in the Flex Shop.
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How To Buy An Oura Ring with HSA/FSA Eligible Funds
We’ll explain when the Oura Ring is HSA/FSA eligible, how to buy one online with HSA/FSA funds, and some key things to know before making the purchase.
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HSA/FSA Stores Where You Can Use Your Accounts Online
Learn where you can spend your HSA/FSA money online, and explore a wide range of products you may not realize are HSA/FSA-eligible with most providers.
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55 Online Shops Where You Can Use Your HSA/FSA Card
We’ll show you over 50+ online stores where you can use your HSA/FSA card to make purchases on qualifying medical expenses, and how to do it at checkout.
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3 Easiest Ways To Get a Letter of Medical Necessity Online
Find out how to get a Letter of Medical Necessity (LMN) online, including the three main methods to do it and how to check if it’s a legitimate provider.
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FSA ‘Use It or Lose It’ Explained & Tips To Spend Funds
We explain the IRS FSA “Use It or Lose It” rule including how and when your FSA dollars expire, and strategies to spend FSA dollars before they’re gone.
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How to Get a Letter of Medical Necessity for Gym Memberships
Find out when a letter of medical necessity (LMN) qualifies a patient to purchase a gym membership using their HSA/FSA account, and why it’s critical.
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Your 2026 Open Enrollment Cheat Sheet: 7 Terms You Actually Need to Know
Confused by health benefits jargon during open enrollment? This quick 2025 cheat sheet breaks down 7 essential terms like deductibles, copays, HSAs, and FSAs so you can choose a plan that fits your needs and save smart with confidence.
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A Guide for Shoppers: Which Skincare Products Are HSA/FSA Eligible?
Learn which skincare products qualify for HSA/FSA reimbursement, when prescriptions or medical necessity are required, and how consumers can use health-spending accounts to save on skincare.
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How To Use Your FSA Money Before the End of the Year
We explain when and how FSA money expires at the end of the year, creative ways to spend your funds before they expire, and great products to use it on.
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Is Theragun HSA/FSA Eligible? Yes — and Now Even More Products Qualify with the Flex x Therabody Partnership
If you’ve ever wished your recovery routine could be covered by your HSA or FSA, you’re in luck—Therabody and Flex are making it happen.
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Is Protein Powder HSA and FSA Eligible?
Your blender may be ready, but is your HSA or FSA? Learn whether you can bulk up while keeping your wallet slim.
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Is ARMRA Colostrum HSA or FSA Eligible?
Boost your immune barrier while saving a buck when you use your HSA or FSA to buy ARMRA Colostrum.
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Can Sales Tax on Eligible HSA or FSA Items Be Reimbursed?
🤔 Did you know that your purchase AND sales tax can be covered by your HSA or FSA for qualified expenses? Maximize your savings with these sales tax tips.
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Can You Use Your HSA/FSA To Pay For a Personal Trainer?
Personal training may be your key to better health in 2025.
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Are Fitness Apps HSA/FSA Eligible?
Health and wellness training in the palm of your hand.
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Can You Use HSA/FSA For Weight Loss Programs?
Tip the scales in your favor — get support for weight loss programs with help from your HSA or FSA.
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Are Probiotics HSA & FSA Eligible? (& How to Buy Them)
Learn when probiotics qualify for HSA and FSA use, when you need a Letter of Medical Necessity, and how to buy eligible probiotics using your benefits.
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Are Fitness Programs & Classes HSA/FSA Eligible?
Fitness funds: Make your HSA and FSA work as hard as you do.
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Parents Want to Know: Are Diapers FSA Eligible?
This baby essential can be a burden on budget.
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Top HSA/FSA Approved Exercise Equipment & Where to Buy
Understand how HSA and FSA eligibility works for exercise equipment, when documentation is required, and how to purchase equipment that qualifies easily.
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Paired With Savings: Does Pair Eyewear Take HSA or FSA?
Stand out from the crowd with Pair Eyewear's changeable frame toppers.
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How to Maximize Your HSA and FSA Savings This Open Enrollment Season
It’s time to start planning for health coverage — and savings
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Oral Rehydration Solutions: Are Electrolytes HSA/FSA Eligible?
Dehydration got you down? Rehydrate with your HSA or FSA.
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When Mattresses Are HSA/FSA Eligible & How To Buy Them
Learn when mattresses qualify for HSA or FSA use, which medical conditions apply, and how to buy eligible sleep products online with confidence today.
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Are Heating Pads and Other Menopause Treatments HSA/FSA Eligible?
Minimize menopause symptoms with treatments covered by your HSA and FSA.
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Are Compression Socks HSA/FSA Eligible & Where To Buy Them
Learn when compression socks qualify for HSA/FSA funds, what conditions make them eligible, and how to buy approved styles through trusted HSA/FSA shops.
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Is WHOOP HSA/FSA Eligible?
Achieve your peak fitness and price performance with the WHOOP 4.0 Fitness Tracker.
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How to Buy a Molekule Air Purifier With Your FSA or HSA
Improve your home’s air quality and save money too — now that’s a breath of fresh air!
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Can You Buy the Lumen Metabolism Tracker With Your HSA/FSA?
Learn about your unique metabolism in order to make smarter lifestyle choices and nutrition decisions with Lumen.
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Sweat Smarter: Are Saunas HSA or FSA Eligible?
Hot tip: You may be able to save money on your next sauna visit.
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How Your HSA/FSA Can Help with Menstrual Pain Relief
We can’t offer up pain-free periods, but these options — ranging from old remedies to new tech — can help make them more manageable.
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A Sound Investment: Are Hearing Aids HSA/FSA Eligible?
Health insurance generally doesn’t cover the cost of hearing aids. Luckily, you can save with your HSA or FSA.
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Are Feminine Hygiene Products HSA/FSA Eligible?
Learn how to mix flow and finance for a more affordable period.
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Beyond the Numbers: Are Body Composition Scales HSA/FSA Eligible?
How to leverage your HSA/FSA for a smart scale and smarter you.
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Hands-On Wellness: Can You Use Your HSA/FSA for a Massage?
Get a helping hand from your HSA/FSA for that much-needed massage
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Shades & Savings: Can You Buy Sunglasses With Your HSA/FSA?
Protect your eyes — and your wallet — with this HSA/FSA guide to sunglasses.
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How Does HSA and FSA Reimbursement Work?
Learn how to save with confidence and get reimbursed with ease.
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Can You Buy Incontinence Products With Your HSA or FSA?
Say goodbye to leaks and hello to confidence.
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How to Buy Sunscreen with an HSA/FSA Plan in 2025
We explore when sunscreen is eligible to be purchased through your HSA/FSA, and cover the eligibility requirements you should consider before buying one.
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Are Vitamins FSA/HSA Eligible & What You Can Buy
Learn when vitamins qualify for HSA and FSA use, when you need a Letter of Medical Necessity, and how to buy eligible vitamins online with Flex today.
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Are Blue Light Blocking Glasses HSA or FSA Eligible?
How HSA and FSA-subsidized spectacles can help you save your sight, sleep and sanity.
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Bye, Bye Back Pain: Use Your HSA/FSA for Posture Correctors
Bad posture is a modern but fixable problem. With posture correctors, you can improve your form, reduce neck and back pain, and pay for it with your HSA.
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How to Tell if Your Heart Is Healthy With Help From Your HSA/FSA
Follow your heart for a happier, healthier you.
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Can You Use HSA for Dental Care? An In-Depth Guide
Brush up on how to use your HSA or FSA to pay for dental care. Our guide covers tips for improving oral health, commonly covered expenses, and FAQs too.
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Tips for a Successful Dry January (and Beyond)
A journey of mocktails, mindfulness, and self-discovery this new year
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Smart Parenting: Save More with HSA and FSA Eligible Baby Items
Give your baby, and your budget, a healthy start.
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Eyewear Economics: Can You Use HSA/FSA to Pay for Glasses?
A clear-eyed 🤓 look at how you can use your HSA or FSA to pay for new glasses, eyewear, or accessories.
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How & Where To Buy HSA/FSA Eligible Air Purifiers
Find out when air purifiers are HSA or FSA eligible, when a medical condition applies, and how to purchase approved models online using HSA/FSA benefits.
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Metabolic Testing at Home: Better Health Insights Covered by Your HSA
Elevate your wellness journey with at-home metabolic testing. Learn how personalized insights can improve your health and how to pay for it with your HSA or FSA.
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Are Orthopedic Shoes & Inserts HSA & FSA Eligible?
Step into comfort and support with our guide to orthopedic shoes. Learn about what footwear options are available and how to pay for them with your HSA or FSA.
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What Is A Letter Of Medical Necessity?
A Letter of Medical Necessity (LOMN) is a doctor's note allowing HSA/FSA spending on medically necessary items not IRS-approved. Flex simplifies the process for consumers by partnering with merchants, streamlining checkout, and eliminating reimbursements.
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What Can You Use Your HSA and FSA For? A Comprehensive Guide
How to guide: Learn to use your HSA and FSA for better health! Discover smart ways to spend your health savings account on medical and wellness products.
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What Are HSAs and FSAs? A Comprehensive Guide
Flex is here to help you understand all the most important aspects of HSAs and FSAs so you can make the right decisions for your health and finances.
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