This 4-bow bimini top with sidewalls plays an effective role in protecting you from direct sunlight and harsh weather conditions such as hail or rain. Durable material: This 4-bow bimini top is made of 100% polyester with a PU coating, making it UV-resistant, water-resistant, and anti-mildew for years of service.Sturdy structure: The bimini top has an aluminium frame, and a 4-bow frame design adds to its stability.Long-lasting: The eye hooks, mounting nuts, and knobs are made of marine-grade stainless steel 316, which is anti-corrosion and especially suitable for long-term use.Practical design: This bimini top provides sunshade coverage for both sides, effectively shielding against direct sunlight and rain. Additionally, the sidewall can be easily rolled up and fastened at the top whenever you want.. Good to know:Please use the boot to protect the fabric when not using the bimini top and fold the canopy when vessel speed exceeds 25 knots.