Merrell's leadership in the barefoot category continues with the Vapor Glove 6. These are the most minimal shoes Merrell creates, featuring a Vibram EcoStep outsole that wraps the foot to maximize grip and connection and a breathable mesh upper to keep feet cool. The Vapor Glove 6 offers maximum lightweight performance in minimalist trail running and training design. Total stack height on these shoes is 6mm. Return to barefoot with the Vapor Glove 6. 100% recycled breathable mesh upper 100% recycled laces and webbing Bellows tongue keeps out debris External rear sling locks in the heel 100% recycled breathable mesh lining 100% recycled mesh wrapped insole Cleansport NXTtreated for natural odor control 30% recycled integrated EVA foam insole Technical Features Drop: 0 mm Stack Height: 6 mm Lug: 2 mm Weight 300 g / pair (10.58 oz) Materials Outsole: Vibram Ecostep, 30% recycled rubber Midsole: Merrell Barefoot 2 Insole: EVA foam, 30% recycled