This is definitely a solid pillow. Nice weight and great build. The reason for only three stars is the lack of tension. I like leveling the camper and then banging hard on the hard plastic bumpers to get them in place and prevent rocking. With them it is impossible to tighten them in one fell swoop because they are rubber. I was able to get a good fit by inserting the camper into the backs and then assembling the fronts, but they loosened up a bit when I leveled the setup since I use heavy jacks that take the weight off the wheels. Recommended for storage but not for camping.