ATN Mastclimber Bosun's Chair -
The only bosun’s chair that allows solo, unassisted ascents of the mast, the Mastclimber fits over any taut 3/8" to 5/8" rope halyard. Constructed from 1 1/2" ballistic nylon webbing with a fiberglass-reinforced seat, Mastclimber combines a bosun’s chair and leg straps with a pair of one-way anodized aluminum/stainless jammers, located at the chair seat and the intersection of the leg straps. Climb the mast quickly and safely using only leg muscles. With no need for static lines, the easy-to-use climber is operated by alternatively standing up on the leg straps, which allows you to slide up the one-way jammer of the bosun’s chair. To descend the mast, the procedure is reversed. Recommended by Practical Sailor in June 2010. Maximum waist size 50".