From strength training at the gym to grabbing a post-run smoothie, this Adidas Accessories Run Essentials Aeroready Cap Black Metallic Silver has AEROREADY tech to keep you feeling dry. Get a custom fit with the adjustable back closure. Soft, double knit fabric is comfortable for running, training, and everything in between. Made with a series of recycled materials, and at least 40% recycled content, this product represents just one of our solutions to help end plastic waste.