Heat-Seal Kraft Bubble Mailers are a quick and easy solution for mailing and shipping. #3 8-3/8 x 13-1/4 Kraft Heat-Seal Bubble Mailer provides lightweight protection for your products. Mailers feature 3/16 high slip bubble lining for easy insertion of products. Sold 100 per case. • #3 8-1/2 x 13-1/2 . • Seal with heat tape or staples. • Lined with 3/16 bubble cushioning to ship fragile items safely. • 1/2 fins on three sides of bag help absorb shock during shipment. • 10-15% lighter than padded mailers to save on postage. Provide extra support for fragile shipments with these Staples open-end bubble mailers. The inner lining has bubble cushioning and three sides have fins providing superior protection against broken items. These mailers weigh 10 to 15 percent less than others saving money at the post office. The open end lets you select your own sealant. • Sold as 100 Per Case.