The Schylling NeeDoh Nice Cube Glow in Dark Solid Squish Cube is a unique and fun squish ball made of silicone material. This purple cube has a super solid squish feature that adds an element of stress relief, along with a glow in the dark property for added entertainment. Measuring 3 inches in height, length, and width, this unit weighs 1 pound and is designed to last for 3 years with a power source. The mini authentic version is a cute and compact representation of the popular Nee Doh brand, making it a great addition for anyone looking for a fun and quirky stress reliever.