NIKE 7" Tempo 2-In-1 Running Shorts Synthetic Stretchy and breathable Dynamic Fit upper for comfort and a glove-like fit Durable Phylite midsole/outsole with Nike Free flex grooves for cushioning and a barefoot-like feel Lightweight plastic overlays for a comfortable lockdown fit Slip-on design and heel tab for easy on and off Tough carbon rubber in high-wear areas on the outsole for durability