These 6” x 15" wide lifters are for collecting footprint residue found at crime scenes and are .005" thick, crystal clear, adhesive-backed mylar. Simply peel off inside release liner and place the mylar, adhesive side down, on the footprint. After lifting the footprint, affix the mylar to the acetate backing card to protect the print. It’s that easy! Available with transparent, white, and black vinyl backing cards.