The Australian made Boomer Bariatric Sling Large with soft solid Nylon back is designed for Haycomp Boomer & Jumbuck Patient Lifters. For use with the 4 Point Hanger Bar Attachment with a Safe Weight Load of 350kg when paired with the Boomer, 300kg with Jumbuck 300 and 240kg on the Jumbuck 240 patient lifters.