Merrell Vapor Glove 6 LTR Merrell’s leadership in the barefoot category continues with the Vapor Glove 6 LTR. These are the most minimal shoes Merrell creates, featuring a Vibram EcoStep outsole that wraps the foot to maximize grip and connection and a leather upper to keep feet in comfort. Total stack height on these shoes is 6 mm. Return to barefoot with the Vapor Glove 6. Leather upper. 100% recycled laces. 100% recycled breathable mesh lining. 100% recycled mesh footbed cover. Merrell Barefoot 2 construction is designed to keep the foot in a natural position. Vibram Ecostep Recycle outsole designed with 30% recycled rubber which provides added durability and improved grip on wet and dry surfaces. NXT treated to prevent odor. 30% recycled integrated EVA foam insole.