Synthetic Imported Synthetic sole ADDED COMFORT - A minimally constructed upper with adapter fit cage overlays and booty construction, use elastic mesh liners to hug the foot for added comfort and support during all workouts. SUPER BREATHABLE - The mesh upper materials ensure the foot has the flexibility and freedom to move naturally during workouts whilst being super breathable for that extra level of comfort during indoor workouts. STICKY RUBBER - Sticky grip rubber outsole delivers high levels of traction on gym floors. SIZE NOTE - The shoes come up a 3 on our fit scale (1 narrow - 5 wide).Product description The ultimate high intensity interval training (HIIT) shoe for workouts both inside and outside of the gym. For HIIT workouts Workout in comfort: Guaranteed comfort, protection and breathability with ADAPTERFIT cage upper and booty construction. Get A Grip: TRIC-C STICKYRUBBER outsole brings high levels of grip, no matter how fast or hardcore the HIIT workout is. Underfoot confidence: Enjoy improved comfort, fit and protection levels underfoot with a FUSION midsole construction and POWER FOOTBED insole.