Material: Durable black waterproof polyester fabric (240g/m²) with PVC coating, ensuring superior water resistance. Construction: 230mm (L) × 230mm (W) × 70mm (H) square base with four-corner stitched reinforcement. Hem Design: Inward-rolled lower hem with a built-in 4mm cotton rope for structure, secured by spring snaps for adjustable fastening. Waterproofing: All seams on the front and side panels are fully taped/sealed to prevent water penetration. Colorfastness: Meets ASTM Grade 4 colorfastness standards (US testing) for fade resistance. Key Features: ✔ Heavy-duty, leak-proof fabric with reinforced stitching. ✔ Functional spring snaps and reinforced edges for durability. ✔ Ideal for outdoor or high-moisture environments.