This stainless steel stress sphere is a favorite fidget toy of mine. Great for an office toy, there is not a puzzle to solve but more a never ending weave of rings that flow over each other. The stainless steel chainmail rings are loose enough to keep pulling over each other and the weave is an infinity pattern that it will never end. Perfect for those who like to fidget and just have to have something for their hands to do. Measures an 1 1/2 inches (4 cm) across and is easily washed if needed in regular soap and water. Gives a very awesome solid feel in the hand coming in at 2.5 ounces.
Obviously not for young children.