Storage Sleeves are rigid sleeves that offer an extra layer of card protection for storage of standard sized cards. Great for sending cards in the mail. Storage Sleeves have a 1/2″ lip for easy insertion and removal of cards. The lip has a writing field for organization. Exterior Dimensions of 3″ X 4-1/2″ (76.2mm x 114.3mm). PETG material. PVC free.