JAM PAPER 9 1/2 x 12 5/8 Booklet Translucent Vellum Envelopes - Clear - 25/Pack Clear translucent vellum booklet envelope Size: 9 1/2 x 12 x 5/8 inches Quantity: 25 envelopes per pack Envelopes are acid-free and recyclable. Translucent Vellum finish makes an exciting statement for any and all greeting cards, thank you's and invitations!