Superior Barrier Bubble® air cellular cushioning offers great protection. Fully laminated, heavyweight Kraft construction delivers outstanding rip and puncture resistance. Seamless bottom provides extra strength and stability. Selfadhesive closure produces a secure, peelandpress seal. Envelope Size: 14 1/4 x 20; Envelope/Mailer Type: Cushioned; Closure: SelfAdhesive; Trade Size: #7.