Common sizes are 2-3/8 x 3-1/2 and 2-1/4 x 3-1/2. We can print front and back with bleeds for a full color design. We have 7 paper options from 70lb matte to tyvek. Call our toll free number and let us help with your card protection envelope order. NetBankStore offers quantity discounts on Card Protection Envelopes and 25+ years experience. 100% Guarantee on all orders.