The Y-3 Running Short Tights capture simplicity in fashion that's made for functional wear. They're built with two layers: outer shorts made from comfortable nylon and inner shorts made from a four-way stretch material. AEROREADY technology helps manage moisture when heat builds, and a polyurethane coating resists water in inclement weather. Back zip pockets keep essentials close, and a reflective print catches the light when it's dim. Made with a series of recycled materials, and at least 70% recycled content, this product represents just one of our solutions to help end plastic waste.