Small (54-57cm)= 21 1/4 in to 22 3/8 in
Medium (57-59 cm)= 22 3/8 in to 23 1/4 in
Large (59-62 cm)= 23 1/4 in to 24 3/8 in
Step 1: Find a measureing tape or something to use as a reference
Step 2: Wrap the measuring tool around your forehead
Step 3: Use the give measurements to find your size
The Thousand MIPS helmet contains MIPS tehcnology.
This technology has helped prevent hundreds of thousands of concussions. It's light honeycomb layer helps prvent whiplash by keeping your head in a fixed position during a fall.
Watch this video to learn more