This is a compression ring. It's small, lightweight and can be worn every day.

Material: stainless steel (note: the styles and materials are all stainless steel, only the color and style differ)

Color: gold/blue/silver/black

Rings are usually worn on the hand as a fashion accessory, but when you twist the ring you get good tactile feedback and a pleasant sound.

Note: This ring is a one-way rotating ring, not a two-way rotating ring.  And it will make a "click-click" sound when rotating.  Do not force the ring to rotate in the opposite direction.