The FlexiWedge has an exclusive, patented, hollow undersurface that allows the wedge walls to collapse and expand into concavities. This disposable, patented plastic-poly dental wedge has a unique concave undersurface, stiff main body, and resilient flanges, which isolates blood, saliva, and crevicular fluids from the cavity preparation during composite and amalgam restorative procedures. Package contains 100pcs each: XS, S and M and 50pcs L and XL wedges.