92% polyester + 8% spandex Rubber sole PERFECT MATERIAL: Ultra Light Weight Stretchy Material allows user to easily put on and take off, to provide you with a comfortable feeling. ULTRA LIGHTWEIGHT & ANTI SLIP SOLE:Unique Sole with non-slip effective to maximally protects your feet. COMFORTABLE & FIT: Breathable upper material, non-slip soles and smooth neck design, to prevent wearing chafing, make you more comfortable and flexible. VARIOUS SIZE AVAILABLE: From XS to XXXL for Women and Men.( For the length, Please Refer to Product Description). IDEAL FOR ANY ACTIVITY: Perfect for beach, swimming, surf, pool, sailing, boating, kayaking, windsurfing, yoga and other any activity.