Race the clock in this adidas HEAT.RDY running cap. Its lightweight build won't bog you down, and laser-cut ventilation makes sure that perspiration won't either. Adjust the back strap to get the perfect fit. You can flip up the brim or wear it down to block the sun rays.Made with a series of recycled materials, and at least 70% recycled content, this product represents just one of adidas' solutions to help end plastic waste. One size fits most 100% polyester (recycled) Laser-cut ventilation HEAT.RDY Flat brim can be flipped up Adjustable back strap Reflective details ADIDAS PERFORMANCE Running x Adizero HEAT.RDY Lightweight Cap