Polyethylene lamination， 100% waterproof.<br />Size represent shoe size， other sizes are described in the figure. <br />Picture reference character height 180cm， weight 67kg.<br />If you can not determine the size， I recommend one size larger than usual， because the shoes also can wear a big， if small can not wear.<br /><br />Warm prompt:<br />After a rain day， dry and fold， couldn’t be the sun insolates， couldn’t be stored in high temperature. if there is dirt， you can use the water to wipe<br />Function:  Wearproof， Breathable ， reinforcement， anti-fouling， super the wind.