Reebok HIIT TR Women's Cold Grey/Orange Flare/Radiant Aqua Be ready to handle whatever challenge comes your way in the Reebok HIIT TR. These cross-training shoes support the many movements of high-intensity interval training. The mesh upper uses a pillow around the collar to provide a comfortable, locked-in fit during high-impact activities. A flexible outsole provides reliable traction on slippery gym floors, so you push, pull, and squat with confidence. Shoe Technology Upper: Mesh upper with a pillow around the collar provides a comfortable, supportive feel. Tongue pull for easy pull-on. Midsole: Lightweight EVA foam cushioning absorbs shock from high-impact landings and provides responsiveness for explosive movements. Outsole: Flexible outsole provides dependable grip on slippery gym floors.