OTSO swimming caps are 100% silicone

100% transpirable

as they never lose their initial shape

a perfect combination to ensure maximum ventilation and moisture transport from the inside out

Botella blanda 250ml Small Cap gorros-natacion OTSO swimming caps are 100%250 ml foldable Soft Flask with a small mouth. DESCRIPTION: Weighing less than 50 g, the OTSO Soft Flask is foldable and has a capacity of up to 250 ml. It complies with all safety regulations for the consumption of liquids stored inside. Very easy to use, it is equipped with a bite valve. A simple suction guarantees a sufficient liquid supply every time you want to drink. Being foldable, it takes up very little space and can therefore be stored