Water does not get thru. Had for over 2 months now and we keep getting rain here in TX so I'm glad I purchased. That's my feedback.

We are using on our pontoon boat in an effort to keep spiders and their droppings off the seats. So far we are very pleased. They are easy to put on the seats and they stay in place. Easy to clean too with only a damp rag. No complaints.

This would have been a five star. My only complaint is even though this has leg straps and a draw string. The water collects on top and is very heavy when trying to drain without wetting up your cushions on your furniture. I wish the drawstring and straps made the tops more taunt so water collection couldn't happen. Other than that, it does what it promises keeping your furniture dry and free of particles