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FrostSpire Size Chart
Find your perfect fit
How to Measure Your Feet
OnBarefoot Size Chart
| USA | EU | FOOT LENGTH | ||
|---|---|---|---|---|
| MEN | WOMEN | EU | INCH | CM |
| 4 | 6 | 36 | 9.4 | 24.0 |
| 5 | 7 | 37 | 9.7 | 24.6 |
| 6 | 8 | 38 | 10.0 | 25.3 |
| 7 | 9 | 39 | 10.2 | 25.9 |
| 8 | 10 | 40 | 10.5 | 26.6 |
| 9 | 11 | 41 | 10.7 | 27.3 |
| 10 | 12 | 42 | 11.0 | 27.9 |
| 11 | 13 | 43 | 11.3 | 28.6 |
| 12 | 14 | 44 | 11.5 | 29.2 |
| 13 | 15 | 45 | 11.8 | 29.9 |
| 14 | 16 | 46 | 12.0 | 30.6 |
| 15 | 17 | 47 | 12.2 | 31.1 |
Fitting Notes
- Wide toe box designed for natural toe splay
- Between sizes? We recommend sizing up
- Measure feet at the end of the day when they're largest
- Always use your larger foot's measurement
Need Help Finding Your Size?
Contact us at support@onbarefoot.com
Made for your everyday
The shoe you reach for every day
The FrostSpire is light enough to forget you have it on and roomy enough to wear from morning to night. One easy pair for wherever the day goes.
Designed down to the detail
Built with care, worn with ease
Every part of the FrostSpire is made to feel light and look clean.
See the difference
The FrostSpire vs ordinary sneakers
Love them or your money back
Wear them for 30 days. If they are not the most comfortable shoes you own, send them back for a full refund.
Good to know
FrostSpire questions, answered
How warm are the FrostSpire boots?
Very cozy. The long plush velvet lining runs a full 360 degrees around your foot, so warmth surrounds you from every side. They are built for cold weather walking and everyday winter wear.
Are they waterproof?
They are made for cold and snow rather than deep water. The oxford cloth and synthetic leather panels handle snow and light moisture, but we would not call them fully waterproof, so skip deep puddles and slush pools.
How is the traction on snow and ice?
The rubber outsole uses an 11 column hexagonal tread that grips packed snow and wet ground well. It gives confident footing in winter, though no boot is fully ice proof on glare ice.
Are these truly barefoot boots?
Yes. FrostSpire is zero drop with a widened toe box and a flexible sole, so your toes can splay and your foot flexes naturally. The contoured footbed adds gentle support without lifting your heel.
What size should I get for thick socks?
They fit true to size for most people. If you like thick winter socks, or you are between sizes or have wider feet, size up a half size for extra room. Women and men have their own sizing, switched with the Women and Men buttons at the top of the page.
How do I care for the upper and plush lining?
Brush off dirt and wipe the oxford cloth and synthetic leather panels with a barely damp cloth. Let the plush velvet lining air dry fully between wears, away from radiators and direct heat so it stays soft.
Can I return them if they do not fit?
Absolutely. You have 30 days to try them. If they are not right, return them for a full refund. We ship to the US and CA.






