This package of face mask extenders includes 2 large extenders and 2 small extenders. The large extenders measures 7 1/2" long and 1/2" wide, and the small extenders measure 5 3/4" long and 1/2" wide. They are made with silicone and are used to relieve pressure on the ears from facemask. Each face mask holder features 3 sets of hooks to adjust your mask. Compatible with most facemasks. This item is sold in a package of 4 (2 Large, 2 Small).