Loon’r Boot Size Guide

Find your perfect Loon’r size by matching your usual US size, foot length, or EU size. If you’re between sizes, we generally recommend sizing down.

Size Conversion

Use this chart to convert between US Men’s, US Women’s and EU sizing. You can also match your foot length in inches or centimeters.

Boot Sole Marking US Men US Women EU Foot Length (IN) Foot Length (CM)
S 5 6 39 9 22.9
M 6 / 7 7 / 8 40 / 41 9.4 23.9
L 8 9 42 10 25.4
LL 9 10 43 10.3 26.2
3L 10 11 44 10.7 27.2
4L 11 12 45 / 46 11 28
5L 12 / 13 13 / 14 47 / 48 11.5 29.2

Boot sole marking is printed on the sole (S, M, L, LL, 3L, 4L, 5L) and corresponds to the sizes above.

How to Measure Your Foot
  • Grab a piece of paper and place it on the floor against a wall. Stand on it with your weight slightly forward so your foot is flat.
  • Mark one line behind your heel and one in front of your longest toe. Repeat on the other foot—use the larger measurement.
  • Measure the distance between the two lines. That number is your foot length. Match it in the chart above using inches or centimeters.

Pro tip: Measure at the end of the day when your feet are at their largest. That’s when your boots need to feel their best.

Sizing Wisdom
  • Between sizes? We recommend sizing down half a size (for example, if you’re a 9.5, go with a 9).
  • Loon’r boot liners will stretch slightly after a few wears, so a snug (not painful) fit out of the box usually breaks in to “just right”.
  • A good fit helps prevent cold toes and blisters – measure twice, buy once.

Additional Boot Specs

All length dimensions below are approximate and listed in inches. Weight is per individual boot (not per pair).

Hi Flyer
US Men US Women Opening Circumference Boot Height Inner Boot Height Outer Sole Length Weight (lb)
5 6 17.75" 15.25" 13.25" 10.75" 1.2
6 / 7 7 / 8 18.25" 15.5" 13.75" 11.125" 1.3
8 9 18.5" 16" 14.5" 11.5" 1.4
9 10 18.75" 16.25" 14.75" 12" 1.4
10 11 19.5" 16.5" 15" 12.5" 1.5
11 12 19.75" 16.5" 15.5" 13" 1.6
12 / 13 13 / 14 20.25" 16.75" 15.75" 13.4" 1.8
Lo Rider
US Men US Women Opening Circumference Boot Height Inner Boot Height Outer Sole Length Weight (lb)
5 6 13" 9.6" 8.5" 10.75" 1.0
6 / 7 7 / 8 13.25" 9.75" 8.5" 11.125" 1.0
8 9 13.5" 10" 8.5" 11.5" 1.1
9 10 14" 10.25" 9" 12" 1.1
10 11 14" 10.25" 9" 12.5" 1.2
11 12 14.5" 10.5" 9" 13" 1.2
12 / 13 13 / 14 14.75" 10.5" 9" 13.4" 1.4