On Cloud X 4 Sneaker White/Black, 7 Materials Upper Unit: recycled polyester / Bottom Unit: Outsole: Rubber / Speedboard: Nylon 6 / Technology: CloudTec ®️ Stability What does Stability mean? Light Star Lacing - An elasticated lace looped in a star-crossed shape keeps you extra secure in the shoe, providing stability and support. Heel to toe drop 7mm - Heel to toe drop is the difference in height between the heel and the forefoot. Weight: 226g X-shaped Speedboard® for forefoot flex and versatility Helion™ superfoam midsole for soft landings and powerful take offs. Midfoot cage provides extra support and lateral stability. Excellent heel hold during multilateral movements Breathable mesh upper Plush materials in the heel and tongue for enhanced comfort Rubber outsole for traction during side-to side movements X-shaped Speedboard® From burpees to box jumps, take on all types of training with power, bounce, and control thanks to the X-shaped Speedboard®. Made with better forefoot flexibility during multi-lateral movements. Made for versatile training The Helion™ superfoam midsole is optimized for training, balancing energy return with stability. For lateral support, the midfoot cage and star lacing system wrap securely around the foot. Feel good shoes The breathable mesh upper helps your feet stay cool and fresh. Plus, the core black and white colorway features a dope-dyed upper – a process that requires 90% less water compared with standard dyeing techniques.