With a shake you cause a rubber band to restore by itself.
1.5 inch Super Soft Sponge Balls (Yellow) Bag of 50 from Magic By Gosh
1.5 inch Super Soft Sponge Balls (Red) Pack of 4 from Magic by Gosh
1.5 inch Super Soft Sponge Balls (Red) Bag of 50 from Magic by Gosh
1.5 inch Super Soft Sponge Balls (Orange) Pack of 4 from Magic by Gosh
