Created by studying the foot in motion, this trainer is designed to enhance the foot's natural ability to stabilize the body during rapid changes in movement.FEATURES a Mesh and TPU upper a Traditional lace closure a Hyperlock(TM) TPU film heel counter for security a M Select(TM) FRESH antimicrobial agents reduces shoe odor a Breathable mesh lining a Integrated insole a Merrell Barefoot 2 construction for enhanced proprioception and stability during variable movement a TrailProtect(TM) rock plate protects feet from underfoot debris a VibramA(R) TC5+ a Stack Height (heel/toe): 11.5/11.5mm; insole: 0mm; insole: 3mm; midsole: 4/4mm; sole: 1.5mm web, 3mm lug a Weight: 7oz / 196g (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. When compared to the Trail Glove 4, it is running A 1/2 size large. If you're looking for a similar fit to our previous version, we recommend you order a A 1/2 size smaller than your typical size.