4 1/4 x 4 1/4 Illusion Black Presentation Box with Window. OVERALL SIZE IS 4 1/4 X 4 1/4 X 3/4 inches WHEN CLOSED. WINDOW IS 3 5/8 X 3 5/8 Inches CAN HOLD UP TO a 3.5 inch coin or medal. BOX OPENS, ITEM TO BE DISPLAYED LAYS ON CLEAR PLASTIC AND BOX SNAPS CLOSED TO SECURE ITEM, PLASTIC STRETCHES AROUND ITEM. HINGED. Box is made of black plastic. Great method to display a coin or medal as if it is suspended in air. Coin / medal can be seed from both sides.