Design: It collapses flat when empty for easy storage and becomes cylindrical when filled with liquid.Construction: Typically made of a PVC inner tube and cover, reinforced with high-tensile polyester yarn.Pressure Rating: Standard blue hoses are usually rated for 3 to 4 bar (roughly 45–60 PSI), though some heavy-duty versions can reach up to 100 PSI.Temperature Range: Generally operates between -10°C to +60°C.