I received this tube with a paddle board and a pump set. The pump and the board are excellent, but the tube is cheaply designed and manufactured. 1. It doesn't hold air without someone actively twisting it into the locking mechanism while I pump. Therefore making it impossible to fill the SUP without someone sitting next to me helping. 2. The tube wore out after about 7 cycles! Small holes developed along the tube that I had to cover with duct tape in order to pump the board up to half capacity. Couldn't get past that point with the valve leak and the tube leaks. I've contacted customer service to see if I can get a stronger replacement. Fingers crossed.