Waterproof and Tear-resistant - This trailer cover features tight, double-stitched seams and reinforced thickness, providing tear strength resistance up to 400 Lbs without cracking at stress points, while effectively enhancing watertight integrity to prevent leaks.windproof and Snowproof - Two ultra-long, heavy-duty straps ensure superior stability and wind resistance, while elastic hem corners and adjustable tension panels provide a snug, custom fit for your Rv cover.durable Material - Crafted from upgraded 4-ply non-woven fabric with anti-uv composites, this camper cover resists rain, snow, and scratches, significantly extending the lifespan of your Rv while safeguarding it from various elements and premature aging.ventilation and Access - With 6 strategically placed air vents to promote airflow and moisture evaporation, and 6 zippers and rollable access panels for quick access