【Best Material for Swim Cap - Fit for adults】Made from the latest advanced silicone, it is super NON-SLIP and WATER-TIGHT. Compared with latex, it is not only non-toxic and tasteless, but also friendly to the skin. And you barely feel you are wearing this lightweight swim cap while swimming. 【3D Ergonomic Design - Fit for adults】 Take 3D stereo design based on the American head type. This design can be TIGHTLY WRAPPED in your head BUT NO PRESSURE, GREAT ROOM FOR EXPANSION and MORE COMFORTABLE TO WEAR, also LESS SWIMMING RESISTANCE than traditional design. 【Large Ear Protection Pocket - Fit for adults】Creat optimum fit. Fully hold your ears, to prevent overpressure and protect them from chlorid, sand and bacteria in the water. Cover ears on-and-off freely. 【GOOD ELASTICITY & NO Deformation】Featuring great elasticity can be stretched easily and not deform after stretching. Fit for adult men or women, and you don\'t need to worry about long hair or short hair. 【Thicker Curved Edge】Better fit and more effective keeps your hair dry preventing water to get into. ***Besides, WE HAVE 12 MONTHS GUARANTEE and PERFECT SERVICE FOR EVERY CUSTOMER!