THE MATIN AIR CUSHION PAD - STRAIGHTMax 50mm of a shoulder strap available. Less pain and fatigue on your shoulder. Feel lighter than its real weight. Does not slip off from your shoulder.Specifications:Condition: New Color: Black Material: Outside - Nylon Taffeta and waterproof coated. Inside - Air cells Quantity: 1 Velcro closure. Type: Straight. Country of Manufacture: Korea, South