OTSO swimming caps are made from 100% silicone, a very high quality silicone, hypoallergenic, which means it does not cause allergic reactions. In addition, it has a suede treatment on its surface, which gives it a velvety and delicate touch. Inside it is non-slip, and of course the chlorine in swimming pools does not cause it to lose its color or main technical characteristics, such as great elasticity and maximum recovery. Like the vast majority of OTSO products, they can be customized to the customer's taste, in this case with a screen printing of the highest quality, on both sides, with a ceramic print that allows excellent contrast and definition. FEATURES: Made entirely in the European Union 100% hypoallergenic silicone Special suede treatment on its surface Anti-slip interior Maximum elasticity and recovery Highest quality screen printing Ceramic print with excellent contrast and definition