With Universal Adjustable Clamp: The clamp can be installed vertically or horizontally, universal to connect the square and tubular surfaces of armrests or support of beach chairs, golf carts, baby stroller, bleachers, patio chair, fishing poles, and more. High Quality: This umbrella is made of high density polyester fiber with black coated to protect your skin on sunny days. The metal tube umbrella has stronger wind and rain resistance and is more durable. Sun Protection: 90cm Diamter umbrella provides a larger area to cover you from sun or rain, 360 degree fully protect your skin, flexible, breathable and lightweight. Lightweight and Compact: The umbrella is easy to fold into 20cm length a compact carrying umbrella, light enough for kids to carry when outside, this umbrella for the beach is a must have for any summer vacation. Wide Used: This clamp on umbrella is not just for the beach but can be used in a wide variety of places where you need to add shade to your favorite chairs like outdoor parties, backyard, swimming pools, stroller, pushchair, and other outdoor events. Specification: Material: Metal Size Chart: Diamter: 90cm/35.43inch Height: 52.5cm /20.67inch Foldable: 20cmx5cm /7.87inchx1.97inch Bracket Clamp:31cmx3cm/12.20inchx1.18inch Package Includes: 1 Beach Chair Umbrella 1 Clamp Note: Please allow slight dimension difference due to different manual measurement.