Rubber sole Drainage Hole Thick Sole&NON-SLIP??this water shoes with 30 drainage hole and thicken sole,quick drying,non-slip and breathable,keeping your feet confortable. PERFECT MATERIAL: Upper with stretch breathable ultra light weight fabric for fast draining and cross ventilation,quick-drying and give excellent flexible and comfortable. ELASTIC STRAPS: According to the width of the foot quickly adjust the shoes elastic and avoid the annoyance of tying your shoes. Elastic and Breathable??Water shoes upper with stretch breathable ultra light weight fabric lycra for fast draining and cross ventilation,enjoy a barefoot feeling no matter what activity you do. OCCASIONS: Perfect for beach,swimming,surf,pool,sailing,boating,kayaking,windsurfing,beach volleyball etc.