The packraft main tube is made of urethane-coated nylon and the floor is made of urethane-coatedballistic nylon . By using high –temperature welding craft , which guarantee the tube air tightness a lot , That is why our packraft made to be durable , packable and lightweight . All kinds of inflatable boats must always be used with care . A serious puncture can immerse you immediately in water ,so we recommend you never pack raft if you are not able to swim ., we added our new design to keep water out rapidly , they keep the lower body of paddler dry . they are suited to those who may not wish to wear a skirts . someone would like to weare leisure clothing suitable for travel .