Your normal shoe size, the one you think you are before a new brand tells you otherwise. Between sizes? Size down.

Hi Flyer and Lo Rider: US Women 5 to 13, US Men 4 to 14/15. Sidekick: US Women 6 to 13, US Men 5 to 12/13.

Size guide

The Hi Flyer and Lo Rider are rated to -25°F and comfortable up to about 50°F.

The Sidekick is the lighter boot for milder days: rated to +15°F, comfortable up to about 55°F.

Hi Flyer and Lo Rider: yes, the EVA shell is waterproof. The cinch cuff on top is water resistant and keeps snow out.

Sidekick: the EVA lower is waterproof up to where the upper starts. The upper is water resistant, so snow, rain and slush are fine. Wading is not.

Deep snow and long days outside: the Hi Flyer, the tall one.

Everyday winter, mud season and dog walks: the Lo Rider.

Quick trips and milder days: the Sidekick, the light one.

Compare all three

Every pair of boots ships free, Alaska and Hawaii included.

Pairs are shipping now, earlier orders first, with tracking by email.

Pairs are shipping now, earlier orders first, with tracking by email. If a color or size isn't in stock yet, its product page and checkout show when it ships.

A color still on pre-order shows its ship window next to the price, and the cart notes it too.

The Hi Flyer's cuff cinches with a draw-cord and gets roomier as the size goes up: about 19 inches around at M4/W5, 20 at M9/W10, 21.4 at M14/15.

Bigger than that? The Lo Rider stops lower on the leg. Email hello@loonr.com with a measurement and we'll confirm.

No. We taught the foam to stay loose when it's freezing, so the Hi Flyer and Lo Rider walk like boots, not bricks.

The Sidekick's lower is the same EVA foam, so it stays flexible well below +15°F.

Yes, for the Hi Flyer and Lo Rider. Liners are sold separately and size-matched to your boot. The liner pulls out, washes on gentle and hangs to dry, so a lot of people keep a second pair to rotate.

Shop liners

If your boots don't hold up, neither do we. It covers manufacturing defects, including any waterproofing failures, for 12 months from delivery. Hi Flyer and Lo Rider liners are covered 90 days from delivery.

Email hello@loonr.com with your order number and a photo, and we'll make it right.

Yes. 30 days, free returns and exchanges.

Try them on indoors all you like. Once they've been worn outside, they can't come back.

Returns policy