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 perfect choice for running on cold days. Functionality is not overlooked either: they come with pre-shaped knees, an adjustable glued waistband, reflective details, and several pockets. With these warm and weatherproof running tights, you'll be ready to head out even when you don't really feel like it.