The Beadalon Tacky bead mat is a sticky mat that keeps beads and pieces in place while you're working. It does not leave a sticky residue when you remove items from there mat. If the mat gets dirty, simply 'recharge' it by washing it under warm water until clean, let dry and it's ready and sticky again. 7 in x 4.75 in x 0.10 in (180 mm x 120 mm x 2.5 mm)