Drop 0 / Weight 172g /Stack Height 6.5mm The Merrell Vapor Glove 3 is still the minimal exponent in minimalist shoe to get the most out of the foot. They have a new reinforced upper part and a new rubber Vibram TC5 +. Extremely flexible, flat or drop zero , with a very low weight and only 6.5 mm. of stack height. The fit is the closest thing to a sock.