Find your
fit

Loon'r boots are unisex. Start with your normal shoe size, the one you think you are before a new brand tells you otherwise. Not sure? Measure once, match the chart, done. Between sizes? Size down.

Hi Flyer & Lo Rider

US MenUS WomenFoot length
M4W521.6-22.4 cm / 8.5-8.8 in
M5W622.4-23.3 cm / 8.8-9.2 in
M6W723.3-24.1 cm / 9.2-9.5 in
M7W824.1-25.0 cm / 9.5-9.8 in
M8W925.0-25.8 cm / 9.8-10.2 in
M9W1025.8-26.7 cm / 10.2-10.5 in
M10W1126.7-27.7 cm / 10.5-10.9 in
M11W1227.7-29.0 cm / 10.9-11.4 in
M12/1329.0-30.2 cm / 11.4-11.9 in
M14/1530.5-31.8 cm / 12.0-12.5 in

Full sizes run M4/W5 to M11/W12, then two combined sizes: M12/13 and M14/15.

Sidekick

US MenUS WomenFoot length
M5W622.4-23.3 cm / 8.8-9.2 in
M6W723.3-24.1 cm / 9.2-9.5 in
M7W824.1-25.0 cm / 9.5-9.8 in
M8W925.0-25.8 cm / 9.8-10.2 in
M9W1025.8-26.7 cm / 10.2-10.5 in
M10W1126.7-27.7 cm / 10.5-10.9 in
M11W1227.7-29.0 cm / 10.9-11.4 in
M12/1329.0-30.2 cm / 11.4-11.9 in

Sidekick runs M5/W6 to M12/13 (eight sizes).

Want a second opinion? Measure.

Stand on a piece of paper, heel against a wall. Mark the tip of your longest toe, then measure heel to mark. Match that number to the chart. Our boots are unisex, so the M and W labels are the same boot with different numbers. Between sizes or right on a line? Size down.

Snug is good. The Hi Flyer and Lo Rider liners break in after a few wears, so a snug-not-squished fit out of the box settles to just-right. And measure at the end of the day, when your feet are at their biggest.

Still on the fence? Email hello@loonr.com with your measurement and we'll point you to the right pair.

Boot specs

Every number here matches the Specs tab on the boot pages.

Hi Flyer

Size Weight per boot Outer shaft height Inner boot height
M4/W51 lb 7 oz 640 g19.0 in 48.3 cm16 in 40.6 cm14.5 in 36.8 cm
M5/W61 lb 7 oz 642 g19.1 in 48.5 cm16 in 40.6 cm14.5 in 36.8 cm
M6/W71 lb 7 oz 641 g19.3 in 49.0 cm16 in 40.6 cm14.5 in 36.8 cm
M7/W81 lb 7 oz 653 g19.5 in 49.5 cm16 in 40.6 cm14.5 in 36.8 cm
M8/W91 lb 9 oz 717 g19.8 in 50.3 cm16 in 40.6 cm14.5 in 36.8 cm
M9/W101 lb 12 oz 800 g20.1 in 51.1 cm16 in 40.6 cm14.5 in 36.8 cm
M10/W111 lb 13 oz 825 g20.4 in 51.8 cm16 in 40.6 cm14.5 in 36.8 cm
M11/W121 lb 14 oz 842 g20.7 in 52.6 cm16 in 40.6 cm14.5 in 36.8 cm
M12/131 lb 14 oz 844 g21.0 in 53.3 cm16 in 40.6 cm14.5 in 36.8 cm
M14/151 lb 14 oz 861 g21.4 in 54.4 cm16 in 40.6 cm14.5 in 36.8 cm

Same in every size

Comfort range
-25°F to 50°F / -32°C to 10°C
Upper
Closed Cell EVA
Liner
Removable insulated liner
Outsole
Rubber traction
Waterproof
Yes

Lo Rider

Size Weight per boot Outer shaft height Inner boot height
M4/W51 lb 1 oz 492 g13.8 in 35.1 cm9.75 in 24.8 cm8.25 in 21.0 cm
M5/W61 lb 1 oz 492 g14.3 in 36.3 cm9.80 in 24.9 cm8.25 in 21.0 cm
M6/W71 lb 2 oz 503 g14.9 in 37.8 cm9.80 in 24.9 cm8.25 in 21.0 cm
M7/W81 lb 2 oz 516 g15.1 in 38.4 cm9.90 in 25.1 cm8.30 in 21.1 cm
M8/W91 lb 4 oz 555 g15.5 in 39.4 cm10.10 in 25.7 cm8.40 in 21.3 cm
M9/W101 lb 7 oz 666 g15.8 in 40.1 cm10.30 in 26.2 cm8.50 in 21.6 cm
M10/W111 lb 8 oz 681 g16.2 in 41.1 cm10.50 in 26.7 cm8.60 in 21.8 cm
M11/W121 lb 8 oz 685 g16.8 in 42.7 cm10.60 in 26.9 cm8.70 in 22.1 cm
M12/131 lb 9 oz 696 g17.4 in 44.2 cm10.75 in 27.3 cm8.90 in 22.6 cm
M14/151 lb 9 oz 721 g18.0 in 45.7 cm11.00 in 27.9 cm9.00 in 22.9 cm

Same in every size

Comfort range
-25°F to 50°F / -32°C to 10°C
Upper
Closed Cell EVA
Liner
Removable insulated liner
Outsole
Rubber traction
Waterproof
Yes

Sidekick

Size Weight per boot Outer shaft height Inner boot height
M5/W69 oz 250 g12.25-14.25 in 31.1-36.2 cm8.5 in 21.6 cm7.7 in 19.6 cm
M6/W79 oz 265 g12.75-15.25 in 32.4-38.7 cm8.7 in 22.1 cm7.75 in 19.7 cm
M7/W810 oz 289 g13.5-16.25 in 34.3-41.3 cm9 in 22.9 cm8 in 20.3 cm
M8/W910 oz 290 g13.5-16.25 in 34.3-41.3 cm9 in 22.9 cm8 in 20.3 cm
M9/W1011 oz 324 g14-16.5 in 35.6-41.9 cm9 in 22.9 cm8 in 20.3 cm
M10/W1112 oz 334 g14-16.5 in 35.6-41.9 cm9.25 in 23.5 cm8 in 20.3 cm
M11/W1212 oz 340 g14-16.5 in 35.6-41.9 cm9.25 in 23.5 cm8.25 in 21.0 cm
M12/1312 oz 346 g14.25-16.75 in 36.2-42.5 cm9.5 in 24.1 cm8.5 in 21.6 cm

Same in every size

Comfort range
15°F to 55°F / -9°C to 13°C
Lower
Closed Cell EVA
Upper
Lightweight synthetic
Liner
Built-in faux shearling (not removable)
Outsole
Lightweight EVA
Waterproof
EVA lower, yes. Upper is water-resistant.