Keep Toes Cosy Beyond Sunset
Threo booties surround chilly feet using lofty duck insulation. Water-resistant nylon shields against damp ground and biting gusts. Soft cushioning brings welcome comfort after demanding winter adventures. Compact storage leaves precious space for essential gear.
Lofty Insulation
Premium duck clusters trap body heat throughout frosty evenings. Seven hundred fill power delivers reliable comfort without bulk.

Weather Defence
Durable nylon resists splashes while blocking harsh mountain winds. Adjustable drawstrings reduce draughts around ankles during restful breaks.

Packable Design
Each pair compresses neatly inside its included storage pouch. Minimal weight preserves energy across longer hiking journeys.

Size guide

TO MEASURE YOURSELF:
Stand in your bare feet with your heel against the wall.
Place a ruler on the floor parallel to your foot with the end of the ruler against the wall.
Find the length from the wall to the end of your longest toe.
| SIZE | US | UK | EU | FOOT LENGTH | |
|---|---|---|---|---|---|
| cm | inch | ||||
| S | 5-7 | 3.5-5.5 | 36-39 | 27 | 10.63 |
| M | 8-10.5 | 6.5-9 | 40-43 | 29 | 11.42 |
| L | 11-12 | 9.5-11 | 44-46 | 31 | 12.2 |
| Size | US | UK | EU | Foot length | |
|---|---|---|---|---|---|
| cm | inch | ||||
| 35 | 5.5 | 4 | 35 | 23 | 9.06 |
| 36 | 6 | 4.5 | 36.5 | 23.5 | 9.25 |
| 37 | 6.5 | 5 | 37 | 24 | 9.45 |
| 38 | 7 | 5.5 | 38 | 24.5 | 9.84 |
| 39 | 7.5 | 6.5 | 38.5 | 25 | 10.04 |
| 40 | 8 | 7 | 39 | 25.5 | 10.04 |
| 41 | 8.5 | 7.5 | 41 | 26 | 10.24 |
| 42 | 9 | 8 | 42 | 26.5 | 10.43 |
| 43 | 9.5 | 9.5 | 43 | 27 | 10.86 |
| 44 | 10 | 10 | 44 | 28 | 11.22 |


















D***K (verified buyer)
New Zealand
I was surprised how small the packed pair felt in my hand, yet my toes stayed cosy in the tent
L***M (verified buyer)
New Zealand
I wore the black booties while sitting around after a cold hike, and the soft padding felt like a treat
M***R (verified buyer)
New Zealand
The black pouch is tiny enough for my winter pack, and the booties warmed my feet fast after camp dinner
C***T (verified buyer)
New Zealand
Warm and light, great for chilly nights
N***S (verified buyer)
New Zealand
Packed easily and kept my feet cosy