This Harness is excellent for gym and program use applications. Its list of features begins with a one size fits most design for waist sizes from 16 to 45 inches. The waist features a double pass buckle and the leg loops feature a two piece slide adjust buckle. This special slide adjust buckles allows quick, easy adjustment and is sewn so that it cannot be unthreaded. The Jim Gyde is designed to allow a second party to adjust the buckles with a minimum amount of contact with the climber.