Thanks to the comfortable and particularly simple adjustment of the silicone strap, it is easy to adjust the eyepiece to the circumference of the head, which can be easily handled by even the youngest swimmers.To ensure a longer shelf life of the product, rinse the eyepieces under running water after each use. Thanks to the soft, silicone seal, the eyepieces are maximally close to the face, which prevents water from entering the oculiers.