LACELESS BOOTS THAT OPTIMIZE TRACTION DURING RAPID ACCELERATION.. Change the game in the X Crazyfast.1 Firm Ground Boots. With a slick, semi-translucent Aeropacity Speedskin upper, these football boots include reinforcements only where they're needed. The laceless adidas PRIMEKNIT offers a firm and comfortable fit, while SPEEDFRAME OUTSOLE with AEROPLATE is designed for propulsion and dynamic movement.Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste.. Regular fit. Laceless construction. Aeropacity Speedskin upper. adidas PRIMEKNIT collar. Aerocage engineered support lining. Lightweight Speedframe outsole. Upper contains a minimum of 50% recycled content