




Use this chart to convert between US Men’s, US Women’s, EU sizes and foot length measurements for Loon’r boots.
M = US Men’s size, W = US Women’s size.
Find your usual size, or match your foot length in inches (IN) or centimeters (CM) for the best fit.
Pro tip: Measure at the end of the day when your feet are at their biggest. Your boots should feel good from morning coffee to late-night snowball fights.
If they feel snug (not squished) at first, that’s usually a good sign. The liners will shape to your feet and keep them comfy on every adventure. Measure twice, buy once. Your feet will thank you.
All length dimensions in inches. Weight is per boot.
All length dimensions in inches. Weight is per boot.
Bought your Hi Flyers before February 2026? These are your liners. A fresh pair for v1 boots, the ones with a letter code stamped on the sole. Pretty much the same as the current liner, just cut to fit v1 shells a little better.
New liners in, and your trusty shells are basically new boots. If your size is sold out, the current liner works as a substitute. Sizing questions? hello@loonr.com.
V1 boots are sized with a letter code stamped on the sole. Flip a boot over, find the code, and match it here:
| Code on sole | Your liner size |
|---|---|
| S | M 5 / W 6 |
| M | M 6-7 / W 7-8 |
| L | M 8 / W 9 |
| LL | M 9 / W 10 |
| 3L | M 10 / W 11 |
| 4L | M 11 / W 12 |
| 5L | M 12-13 / W 13-14 |
Code worn off or hard to read? Email hello@loonr.com with a photo of the sole and we will sort you out.
The v1 department
These liners fit v1 boots, the ones sold between August 2024 and February 2026 with a letter code (S through 5L) stamped on the sole. The size guide below the add to cart button maps your code to a liner size. Boots from Fall 2026 onward take the current liner instead.
Shop the current liner →You're in. Good Yuck out there.
You're already with the flock. No need to ask twice.
| Product | SKU | Description | Collection | Availability | Product type | Other details |
|---|