Inflatable Kayak are the same as our other inflatable items manufactured using the stongest0.9mm/1000Denier fabric having been specially coated with PVC Tarpaulin, which is unaffected by gasoline, ail and salt water, it's highly resistant to damage from abrasion, impact and sunlight(UV). It also permits more air pressure for rigidity. And the fabrics are connected by hot air welding machine instead of hand gluing, which makes the boat very strong at seam.The color fasteness is good enough to keep it new, and there are double layers of the sides of boat protect the boat after long time using.