NIKE Hypervenom Phelon IC Indoor Soccer Shoes (Bright Crimson/Volt/Hyper Punch/Black) Synthetic Rubber sole Soft, thin synthetic leather upper for a great fit and ball feel. Contoured last mirrors the shape of the foot for a glove-like fit. Decoupled outsole for improved agility through metatarsal activation. Shortened lace area to increase the size of the vamp and strike zone. Indoor-competition (IC) outsole made with non-marking materials and features designed to help enhance movement and traction.