Polyester material reinforced with Aramide (Kevlar). Vulcanized with hot temperature under pressure in one operation. Non-slip surface providing maximum friction when stacking two lifting bag. Sizes: 950 x 950 mm. Thickness: 25 mm. Lifting capacity: 67.7 t. Max. stroke: 520 mm. Max. air requirement: 1457.1 L. Max. inflation pressure: 8 bar. Test pressure: 12 bar. Weight: 21.9 kg.