M.A.
Costco has good quality ones for about $25ish and they last. We bought a more expensive one at RonJon's that was more expensive & it had a bubble in it by the end of the 1st day. Needless to say it went back. You may have to wait for warmer weather for Costco to have them in stock. If you don't have a membership ask a friend that does to be on the lookout. That's what we did.