The eS scale skateboarding shoe is the world’s lightest technical skate shoe made based on the idea that the less a shoe weighs, the easier it is to move one’s feet. The eS scale skateboarding shoe is made with a new type of foam, which STI calls Evolution Foam. This eS skateboarding shoe weighs a only 380 grams and by having less weight to carry around, skaters can board almost barefoot. But don't worry about the shoe falling apart because eS says that Evolution Foam is "extremely resilient and long lasting". eS skateboarding.