Mesh and TPU upper with a traditional lace closure system and Hyperlock TPU film for added security at the heel M Select FRESH agents to minimize shoe odor Breathable mesh lining and integrated insole Merrell Barefoot 2 construction for improved proprioception and stability TrailProtect rock plate for protection from underfoot debris Vibram TC5+ with a stack height of 11.5/11.5mm and varying sole thickness Weight: 6oz / 170g (1/2 pair) SIZINGThe Trail Glove 5 is a barefoot shoe, and has been built with a full forefoot to allow for a more natural foot movement. Compared to the Trail Glove 4, it runs ½ size large. If you prefer the fit of the previous version, we suggest ordering a ½ size smaller than your usual.