Beverage can pop top popper. Also known as the Top Popper or Ring Popper.

Worn like a ring, except the "Ring Thing" only slips over the first knuckle of the index finger to gently lift and open beverage can pop tops.

 The nickel colored alloy metal Ring Thing comes in four sizes (ring sizes are approximate):

   Extra Small - Ring size 5-6  (16 mm)

   Small - Ring size 6-7  (17.25 mm)

   Medium - Ring size 7-8  (18.5 mm)

   Large - Ring size 9-10   (20 mm)

Basically get the same size as the ring you wear. 

REMINDER: Don't forget to pick your size the when you check out.