The Harbinger 5 Inch Foam Core Belt features a flexible, ultra-light foam core to provide support to stabilise the core muscles and protect the back during heavy lifting. The belt is soft and comfortable, allowing a full range of motion during functional strength training exercises. The belt helps support the back during weightlifting and functional strength training. The breathable, plush tricot lining is soft against the skin and comfortable throughout even the most varied workouts. The adjustable, heavy-duty strap with heavy-gauge steel tensioning buckle fastens securely, customising the fit for optimum support and stabilisation.