This quality bimini top has a 3-bow frame design; playing an effective role in protecting you from direct sunlight and harsh weather conditions such as hail or rain. With a height of 53.9"; this boat canopy could be adjustable from 66.9" to 71.7 in width; providing you with very large space while enjoying your boating experiences. Made of 100% polyester with PU coating; it is UV-; water-resistant and durable for years of service. The anodized aluminum frame adds to its stability. Important note: Please use the boot to protect the fabric when not using the bimini top and fold the canopy when vessel speed exceeds 25 mph. Material: Fabric (100% polyester with PU coating); aluminum. Dimensions: 72" x 70.9" x 53.9 (L x W x H). Flexible mounting width: 66.9"-71.7". 4 adjustable nylon straps with stainless steel clip. UV and water resistant; anti-mildew.