This Portable Emergency Boarding Ladder is made of high-visibility orange, molded-in polycarbonate with nylon rope supporting the frame. Quickly secured to cleats, railing, stanchions, and halyards. Support up to 300 lbs. 4-Step Ladder measures 11-3/4"W x 4'9"L overall when deployed. Collapses to only 4-5/8".