The Zeroweight Warm Running Tights 2.0 are now made entirely from recycled materials – featuring a waterproof and windproof softshell fabric on the thighs and a warm, ultra-stretchy material on the lower legs and back – making them the ideal choice for running at pace on cold days. Functionality is also a priority: they include pre-shaped knees, an adjustable bonded waistband, reflective details, and multiple pockets. With these warm and weatherproof running tights, you'll be ready to head out even when you don't really feel like it.