The hose is mainly built out of rubber. Rubber deteriorates quickly and must, therefore, be treated and stored correctly. Global Onsite has a policy that we will never sell a customer a hose that is older than 2 years. If a hose has any scratches in the outer cover it will also be scrapped. If a hose is stored in UV light or exposed to daylight the rubber will age even faster. All our hoses are stored in closed boxes to avoid any UV light exposure.