Features: It is made of premium quality polyester woven fabric and polypropylene fiber which is not easy to break does not fade in contact with sweat and has strong corrosion resistance. The mask lengthening strap can effectively relieve the pressure and pain caused by long time wearing the mask. Mask extenders strap with adjustable buckle that can fit most head sizes. You can also make it hang comfortably around your neck and no need to worry about shedding when you don't wear a mask. Small size and light weight you can carry it very conveniently. Great for kids students nurses doctors teachers bartenders hygienists dentists essential workers health care security police and more. With customer satisfaction as our first priority we offer a satisfaction service for all of our merchandise. Specifications: Material: polyester rope Length: 75cm Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. includes: 6*Adjustable Length Mask Lanyard "