"Weatherproof with a durable interior and exterior, this cover´s ready for every turn and whatever Mother Nature has in store. Weatherproof PVC Vinyl ExteriorWoven lined interior with elastic cord and slit in gusset for flexibility. For correct size tire cover, measure the diameter of your tire.28"", 29"", 30"", 31"", 32"", 33"" | Life is Good Simple Daisy Tire Cover in Night Black Size 30"