Specifications: 1, POM 2,W: 38mm travel bags/backpack/laptop(computer) bag,suitcase,piggy bag,travel case used bags or luggage accessoriesfitting trolley case/backpack/laptop(computer) bag,suitcase,piggy bag,travel case, travel bags used Specifications1,material,POM2,inner width: 38mm .3. net weight, 2.8g/pcs. plastic rectangle ring