What Is OluKai
OluKai makes the flip-flops you pack for the beach, the slippers you keep by the door, and the slip-on shoes you wear out. The Hawaiian-inspired brand builds its footwear around what it calls the Wet Sand Principle: a footbed that cups your heel, supports your arch, and leaves room for your toes.
That design runs through more than its sandals. OluKai describes anatomically contoured footbeds across its shoes and slippers too. The ‘Ohana is a water-friendly beach sandal, Moloā Slipper combines leather and shearling, and Pehuea is a breathable mesh sneaker with a heel that folds down. Those examples run about $80 to $140 at regular U.S. prices.
When a provider ties that built-in support to your foot condition, your HSA or FSA can pay for the pair. House slippers count as much as the shoes you wear outside. Our shoe eligibility guide covers the broader footwear rules; this page focuses on OluKai.
Why OluKai Qualifies for HSA/FSA
OluKai footwear qualifies when a licensed provider connects its use to your health condition in a Letter of Medical Necessity (LMN). Arch support for a painful foot is a medical purpose; buying the same pair simply because you like the style is personal spending.
IRS Publication 502 includes expenses for the “diagnosis, cure, mitigation, treatment, or prevention of disease”. Some common conditions a provider can document include:
- Plantar fasciitis. AAOS explains that cushioning reduces tension on the plantar fascia when your heel hits the ground. A provider can connect supportive sandals, slippers, or shoes to managing that heel pain, including the time you spend on your feet at home.
- Painful flat feet. When flexible flat feet hurt, MedlinePlus says an arch support or special shoes may help. OluKai says it builds arch support into the contoured footbed of every pair.
- Insertional Achilles tendinitis. When the irritated tendon meets the heel, softer or open-backed footwear can ease that irritation, according to AAOS. OluKai's open sandals and fold-down heels offer different ways to leave that area uncovered.
- Metatarsalgia, or ball-of-foot pain. Mayo Clinic includes changes in shoes and arch support among the ways to ease symptoms. The medical reason here is reducing stress on the painful forefoot, with your provider identifying the support you need.
- Bunions. AAOS points to properly fitting shoes with a wide or open toe box as a way to manage bunion pain. OluKai says its footbed lets your toes splay, and its open sandals have no toe box at all.
Another condition your provider links to the footwear in your letter counts just as much.
How to Get OluKai Covered With a Letter of Medical Necessity
You have two ways to get a letter for OluKai footwear:
- Through Crates, typically in under 24 hours. Complete a 2 to 3 minute online health assessment. A licensed provider reviews your answers and, if you qualify, issues your letter for OluKai footwear. It stays valid for 12 months and renews each year.
- Through your own doctor, a few days to a few weeks. Book a visit and explain that you want to buy OluKai with HSA/FSA funds. Ask your doctor to document how supportive footwear helps prevent, manage, or reverse your condition, then sign and date the letter. You may owe a copay for the visit.
How to Buy OluKai With HSA/FSA Funds
Buy your OluKai footwear wherever you like, then get your HSA/FSA money back. Start with the letter so the medical purpose is documented before you shop.
- Get your Letter of Medical Necessity first. Use either of the options above.
- Buy your pair anywhere. Pay with your personal card, online or in store. Keep the itemized receipt showing the footwear and amount paid.
- Get your money back. Crates one-click reimbursement files the claim for you, or upload the letter and receipt yourself. With an HSA, keep both documents with your tax records.
Paying with pre-tax funds can save you up to 30%, depending on your tax rates and how you fund the account. The accounts handle timing differently: Publication 969 ties HSA expenses to when the account was established and FSA expenses to the coverage period. For the rest of what sets the two accounts apart, see our HSA vs. FSA guide.
Which OluKai Products Qualify
OluKai sandals, slippers, and shoes qualify the same way: with an LMN documenting their use for your condition. The four examples below show the range, from an open beach sandal to lined house slippers. Eligibility follows the medical purpose, not a special model name.
| OluKai product and regular price | What it is | HSA/FSA eligibility |
|---|---|---|
| ‘Ohana, about $80 | Water-friendly men's sandal | Yes, with an LMN |
| Moloā Slipper, about $140 | Men's leather and shearling slipper | Yes, with an LMN |
| Pehuea, about $100 | Women's mesh slip-on sneaker | Yes, with an LMN |
| Nohea Slipper, about $130 | Women's soft shearling slipper | Yes, with an LMN |
Regular U.S. list prices checked on OluKai's site on October 23, 2026. Men's and women's versions use the same medical-purpose test. A pair bought on sale, on clearance or at an outlet qualifies just as a full-price pair does, and you get back the amount on your receipt.
If your search also includes running shoes, our HOKA eligibility page and On eligibility page cover those brands' models and documentation.
