toroflux Flow Ring Arm Slinky magic bracelet Arm Slinky Spinner Rings Kinetic Spring Toy Magic Rings Bracelet

Mesmerizing, educational kinetic sculpture and interactive "flow toy"

Folds flat and pops open, surprising everyone

Interactive: Rolls along your arms and can be passed from one arm to another

Diameter: 13cm  when flat. All handmade, exact size may vary

Great gift for science and math lovers

Package includes: one flow ring, small size (13cm)