... so easy rope loose, also can make the nose of the crack side up3,Because it is stereo ... processing, so it can avoid the mouth, nose, tighten breathing difficulties uncomfortable feeling4 ... more smoothly5,Hang on the ear is the rope with very soft rubber belt, ear will feel very comfortablematerial: ... M2 (100% PP SPUNBOND)colour:whitestyle:Elastic ear loopmeasurement:52*38*34CMN.W:8kgsG.W:10kgs ...