JAM PAPER Plastic Envelopes with Button & String Tie Closure - Index Size - 5 1/2 x 7 1/2 - Lime Green - 12/Pack Color: Lime Green Size: 5.25 x 7.5 inches Quantity: 12 per pack Our envelopes feature a button and string closure designed to keep contents inside secure and organized These index expansion envelopes envelopes make it easy to organize a set of index cards, or smaller documents and items like checks, receipts, currency, deposit slips, coupons, and wallet photos