The Speedo Men's Fastskin Swimming Cap features innovative IQfit™ technology, developed from precise head mapping data to deliver exceptional comfort, secure fit, and enhanced hydrodynamic performance in competitive races.Key FeaturesFINA-approved designProtects hair and can withstand hours of exposure to chlorinated waterIQfit™ Technology designed using accurate head mapping dataReduces full body drag force by 3.4%More Details Speedo branding offers a signature finishWear this swim cap for safe and comfortable swimming sessionsMaterial composition: 100% Silicone