Truly the best sanitation hose on the market. This Sealand "odorsafe" sanitation hose comes with a 5 year warranty against odor permeation. Don't be fooled by all the white, so called, safe hose. Sealand is the only manufacturer that offers this 5 YEAR WARRANTY. To find out if your hose is permeated, swipe a dry paper towel along the hose and then smell the paper towel. This is most often the problem when people tell me " my boat smells inside". Sold in 5’ increments. 1 1/2" ID Marine grade hose.