Fabric: BIZ COOL 89% Nylon, 11% Elastane, 4 Way Stretch fabric. Power stretch performance fabric with no show through. 310 GSM. UPF rating - Excellent. Features: Extra wide comfort waistband with flat seams. Reflective visibility tape leg feature. Internal key fob pocket. Sizes: XXS - 2XL. Colours: Black. Cares: Extras.