Now you can provide extra vestibular stimulation and controlled bouncing with your favorite swing. The Vertical Bouncing kit features heavy duty elastic loops that can handle up to 285 pounds. This is the perfect way to add a whole new dimension of sensory input to your existing equipment. This set includes 2 Single Vertical Bouncers, 2 Double Vertical Bouncers, 2 locking Safety Snaps, and 4 elastic loops. This heavy duty set is designed by occupational therapists and will work well in school or clinic settings.