I was skeptical about purchasing the covers without seeing them in person, since I was uneasy how well they would fit my chairs.  It was a nice surprise to receive them and have them fit perfectly!  Durable, thick plastic and I literally left my chair cushions on, to minimize having to store them in my garage.  Several years back I purchased covers at a local dept store and the quality wasn't good.   With some recent gusty winds we had, the velcro straps at the legs kept the covers secured.  Very pleased with my purchase.