Material : made of high quality artificial leather,cotton,nylon,ABS,stainless steel. ---Non-Toxic, Non-Irritation, No Breakage Worry. Size description: neck circumference (adjustable): 37cm-50cm, head circumference: 60cm, height: 30cm. Net weight:18 oz(520 g). Gross weight : 20 oz(580g). Packing list:artificial leather head hood*1,Padlock 3 Pieces & one Pulling Rope. Compact size easy to storage,put on and take off,not only use at home,also fits outdoors. Your daily life will be more enjoyable by the excellent sensory deprivation items. Professional design,it's made of high quality,soft stout safe and durable property,head and neck leather binder locking belt,an effective sport tool. 100% shopping guarantee,money-back satisfaction guarantee,we strive to ensure that all customers are completely satisfied with their purchases, and have full confidence that this product will go beyond expectations . If you have any questions, please feel free to contact us.Note: Please allow 1-2cm differences due to manual measurement.Please understand.