Designed for the marine environment. Non-corroding materials, acrylic coated fabric stretched over plastic polymer bow ribs that will not stain or rust. 6' across at bow with 5' 2-piece shaft made of flexible double cored fiberglass with chrome brass joint for compact storage in its own carrying case. Adjustable all angle rail mount fits 1" and 7/8" round rail and is made of 18-8 stainless steel and anodized aluminum alloy.