Amazon.com: Silvotek 2 Seater Garden Bench Cover – Waterproof Outdoor Bench Cover with Durable 210D Oxford Material+ Extra PVC Coating, Patio Bench Cover - 53" L x 26" W x 35" H :
Classic Accessories Duck Covers Weekend 42 in. W x 18 in. D x 3 in. Thick Rectangular Outdoor Bench Cushion in Straw CSWBN42183 - The Home Depot