This item is currently out of stock.
Thin-walled sewer hoses tend to develop pinholes and stiff spots after a season or two of sun exposure. SmartHose is made with a heavier gauge of plastic, roughly 23-26 mils thick, over a coil designed to keep flexing without cracking, denting, or corroding.
A solid upgrade if your current hose is stiffening up or showing wear after repeated use.