The VSD provides excellent vestibular and proprioceptive stimulation because it allows controlled bouncing and vertical movement. It comes complete with two locking safety snaps and four industrial quality elastic loops — two single loops, each with a working load of 15kg, and two double loops, which have a working load of 30kg per double loop. This setup provides a working load range of 15–80kg You can add additional double loops in place of the single loops to increase your VSD’s capacity to 110kg.