The St329 sneaker was the original tennis training shoe developed by K-Swiss, and has since become a cult-classic. Designed and built to last, this staple sneaker showcases a durable rubber outsole, sturdy tread, and maximum comfort with a k-eva cushioned midsole and premium memory footbed. Designed and built to last, this staple sneaker showcases a durable rubber outsole, sturdy tread, and maximum comfort with a K-EVA cushioned midsole and full length premium memory footbed.