Amphipod | Xinglet Sumo Pocket | Unisex Color:Black It uses an elastomer stability

It uses an elastomer stability plate intended to stabilize the forefoot and assist propulsion

4-pin spike plate

The patented technology self-adjusts for different body sizes and targets the IT-bands

but remove or adjust pins when rules or hard paved segments require it

Drop 13 - 26 in

Amphipod | Xinglet Sumo Pocket | Unisex Color:Black It uses an elastomer stabilityMORE AMPHIPOD PRODUCTS Brilliant reflective visibility in a minimalist and lightweight design with enhanced bounce free front storage for smartphones and more! Up to 100% more reflective area than standard running vests Front zipper pocket expands for plus sized phones (6"x3. 5" pocket) Full 360 reflectivity with soft, comfortable stretch design Airy patented construction won't trap sweat Front access Swift Clip release for fast on and off Easy size