Featuring an assortment of bright colors to choose from, each one of these envelopes is made out of smooth, high quality paper. To keep the contents placed inside of these envelopes secure, each one features a straight flap opening with a reliable, moisture activated gum closure. Use these small, vibrant envelopes to enclose cash, receipts, invoices, memos, gift cards and much more! Details: Available in multiple colors 2.25" x 3.5" (#1) envelope size 24lb/90gsm Straight flap opening Moisture activated gum closure 50 envelopes 30% recycled paper