25 #3 (8.5″ x 12″) Self-Seal Kraft Bubble Mailers Inside usable space – 8-1/2″ x 10-1/2″ Size may vary by 1/4″ on either side Includes Free Shipping to any US address. Self-sealing (peel and seal) Kraft bubble-lined mailing envelopes  Extra-sturdy golden Kraft Paper mailers lined with 3/16″ bubble Made in the U.S.A. Popular size for shipping books. 1″ lip and tape self seal closure is hot melt adhesive covered with silicone coated release liner.    Kraft paper is 100% recycled (25% PCR). Minimum of 30% recycled plastics. Mark and Robin Le Vine