Water resistant material but seams are not taped. Ventilation system minimizes condensation build-up and allows constant air circulation. Rain cover made from a medium weight top quality UV-treated Tri-max® polyester. Silver heat resistant lower panels. Soft wiindshield liner helps protect against scratching and hazing. Elastic bottom with one-inch grommets at center and front wheel for snug bottom fit. Packed in carry-all. Dimensions approximately 99" length x 54" height x 36" width.