4.25" (11cm) flex frame
Make coin purses, glasses cases etc. When you squeeze the sides together, the purse pops open and when you release the pressure it closes again.
Really neat little item - really easy to install, just insert one pin (included) and use pliers to add gentle pressure to close.
The heart shaped coin purse is one I made earlier !
These are so easy to use, and make a quick, useful gift.