Tundra – Waterproof & Fleece-Lined Barefoot Boots
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Color Black
Size M 4
Tundra Size Chart
Find your perfect fit
How to Measure Your Feet
OnBarefoot Size Chart
| USA | EU | FOOT LENGTH | ||
|---|---|---|---|---|
| MEN | WOMEN | EU | INCH | CM |
| 3.5 | 5.5 | 35 | 8.6 | 21.8 |
| 4.5 | 6.5 | 36 | 8.9 | 22.5 |
| 5.5 | 7.5 | 37 | 9.1 | 23.2 |
| 6 | 8 | 38 | 9.4 | 23.8 |
| 7 | 9 | 39 | 9.6 | 24.5 |
| 7.5 | 9.5 | 40 | 9.9 | 25.1 |
| 8.5 | 10.5 | 41 | 10.2 | 25.8 |
| 9 | 11 | 42 | 10.4 | 26.5 |
| 10 | 12 | 43 | 10.7 | 27.1 |
| 11 | 13 | 44 | 10.9 | 27.8 |
| 11.5 | 13.5 | 45 | 11.2 | 28.4 |
| 12.5 | 14.5 | 46 | 11.5 | 29.1 |
| 13 | 15 | 47 | 11.7 | 29.8 |
| 14 | 16 | 48 | 12.0 | 30.4 |
Fitting Notes
- Wide toe box designed for natural toe splay
- Between sizes? We recommend sizing up
- These US sizes are matched to this style’s real measurements, so they may differ by half a size from other brands — trust the CM column
- 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
Why your feet hurt
A warm boot should not cost you your toes
Tap a spot to see why it hurts.
-
When your feet are tilted all day, everything above them adjusts to compensate.
In TundraYou keep a natural stance on frozen ground. -
A raised heel tips you forward, and your knees absorb what your feet cannot.
In TundraNo hard shape pressing on one spot all day. -
A stiff sole stops your foot bending, so the work travels up into your lower legs.
In TundraYour foot moves instead of being held still. -
Your toes are held in a point all day, so the widest part of your foot carries the pressure.
In TundraYour toes splay even over thick winter socks.
Nothing pressing. Nothing tilting.
What you get with Tundra
A warm winter boot you can dial in to your own foot
Deep warmth wrapped round the whole foot
A thickened long plush lining runs all the way round.
A fit you can actually set yourself
Laces put the tension exactly where you want it.
Thick socks and a genuinely wide front
The toe box keeps its five toe shape and comes in a wide fitting.
Footing you can trust on snow and trail
A deep embossed tread digs into snow, ice and rocky trail.
Slush and snow run off the shell
A water repellent upper sheds rain, snow and slush.
Warm without the plank underfoot
The body twists and bends freely instead of holding your foot rigid.
The details, if you want them
- Style
- Barefoot winter snow boot
- Shoe type
- Insulated mid top boot
- Season
- Winter, cold weather
- Best for
- Snow, winter hiking and walking, cold weather commuting, travel
- Upper material
- Water repellent umbrella cloth with synthetic leather
- Lining
- Thickened long plush fleece, windproof
- Insole
- Plush fleece over EVA
- Outsole
- Wear resistant lugged rubber
- Sole profile
- Zero drop
- Toe box
- Wide, five toe barefoot shape
- Closure
- Lace up with collar cord lock and heel pull tab
- Water resistance
- Water repellent, not fully waterproof
What to expect
The first two weeks
Your feet need a few weeks.
Day 1 to 3
A couple of hours
Around the house.
Day 4 to 7
Half a day
Short walks outside.
Day 8 to 14
Most of the day
Out on frozen ground.
Day 15 on
All day, every day
Wear them anywhere.
Why it works
What Tundra actually does for your feet
Warm all the way round, not just underneath
Plush lining wraps the whole foot.
Your toes still splay, even in winter socks
Five toe barefoot shape, in a wide fit.
Sure footing on snow and rock
Deep lugged tread bites into snow and ice.
The weight
You do not wear your boots. You lift them, about 7,000 times a day.
A normal winter boot adds a few ounces. Multiply that by 7,000.
18 oz per shoe
Weight you stop lifting, every day
0 lb
One shoe per step, at 7,000 steps a day.
Why this pair
Tundra against a standard winter boot
Fit and anatomy
Shaped like a foot, not a wedge
Your toes should sit inside the outline, with room to spread.
Put your foot on the insole. Your toes should sit inside the outline with room to spread.
It gives where your foot needs it to.
Room across the front, even over thick winter socks.
- Foot shapedtoe box, room to splay
- Zero dropheel and toe sit level
- True to sizeelastic laces, nothing to tie
No seam across the top, so nothing digs in.
Questions
Tundra questions, answered
How warm are the Tundra boots?
Built for real cold. The plush fleece lining runs through the whole boot and the mid ankle padded collar traps heat around your ankle, so they hold up on genuinely cold winter days.
Are they waterproof or water resistant?
These are waterproof. The synthetic leather and oxford cloth upper carries a waterproof treatment that keeps snow, slush and rain out. They are made to handle wet winter conditions.
How is the traction on snow and ice?
The rubber outsole uses a concave hexagonal tread that channels away slush and grips packed snow and wet pavement. It keeps you steady in winter, though we still suggest care on bare ice.
Are these really barefoot boots?
Yes. Tundra is zero drop with a wide toe box and a flexible sole, so your toes can splay and your foot bends naturally. You get full waterproof winter protection without losing the barefoot feel.
What size should I get if I wear thick socks?
They fit true to size for most people. If you plan on thick winter socks, or you are between sizes or have wider feet, size up a half size for extra room. Women and men have separate sizing, picked with the Women and Men buttons at the top of the page.
How do I care for the upper and fleece lining?
Wipe the synthetic leather and oxford cloth with a damp cloth and let the boots air dry naturally away from direct heat, which protects the waterproof treatment. Air out the fleece lining between wears and never machine dry them.
What is the return policy?
You have a 30 day money back guarantee. If they are not right for you, return them within 30 days for a full refund. We ship to the US and CA.
