NEW! Extra Durable 4” sensory ball filled with a hypnotizing shimmery liquid that swirls as you shake, twirl, toss, or bounce it! This weighted ball makes a great (self-regulating) visual fidget tool for sensory breaks, is nice for providing deep pressure weighted proprioceptive input, and is a mesmerizing gross motor tool for upper extremity strengthening and stability. A popular OT and PT tool for schools, clinics, homes, hospitals, and rehab use. Weighted Swirl Ball weighs about 1 lb. and comes in gorgeous assorted colors including white. One of our favorite new products!