First released in 1989 as part of the adidas ZX 8000 from adidas' ZX running series, the model introduced the Torsion System for improved stability and flexibility. The upcoming Navy & Solar Dominate every distance with Adidas Ultraboost 5X, torsion system locks in stability while the outsole grips like a beast & light Boost foam which delivers featherlight power and endless energy. Available in The adidas Torsion System explained Sneakerjagers Adidas Torsion System Shoes Foot Locker adidas Shoes Eucadidas Torsion System Shoes Black Magenta Silver White Size 7 Poshmark