Synthetic Rubber sole UA TriBase maximizes ground contact, promotes natural motion & provides flexibility to grip during lifts Lightweight, breathable engineered mesh upper with stretch & structure where you need it Plush knit collar for maximum comfort Medial & lateral TPU midfoot strap for lockdown during even the most demanding workouts Responsive UA HOVR cushioning reduces impact, returns energy & helps propel you forward Project Rock training gear was built to help you find boundaries, then push right through them. Everything in this collection was personally approved by Dwayne Johnson, the hardest worker in the room. ANY room.