This cover is very durable!  It stayed on all winter, stayed dry with snow piled on, and stayed in place during many storms.  The design allows for snugging up the draw string, and it fits even my odd size and shape fire pit with the swinging grill top and wide tubular bottom.  I think I've had it 8 months now, and it is still like new!  It never got stiff or cracked like other covers.