FitFlop Rally Crystal-Backtab Trainers in Black. Upper Material: Leather, Lining Material: Mesh, Sole Material: Rubber. Closure: Lace-Up. Features: Comfort, Breathable. Toe Shape: Round. Shoe Width: Regular. Item Weight: 0.36 KG. Heel Height: Low (2.5-4.9cm). Shoe Shaft Height: Low Top. Trainer Style: Casual. Product Code: HY8-001. Ergonomically engineered to help optimize your body's alignment, natural movement and energy. Ultra-light, all-day cushioning anatomicush midsole with flex grooves across the bottom to let feet move freely. Natural arch support. Average to wide fit, this style fits true to size. Grip level 1 – everyday use/road tread.