Despite the reviews above, I thought this pool cover worked really well for the pool it is designed to cover. I had no problem keeping bugs and rainwater out of our pool and it provided great solar heat, warming the pool to wonderfully warm temps! I have had this pool cover for 2 summers and it is holding up wonderfully. Our biggest problem is keeping our pool from deflating. We have gone through 4 pools in 2 summers. This years pool just deflated once again.