Item #: MMM7935. Bubble Mailer protects your important items during shipping. Easy, self-seal closure. Lightweight. Durable. Meets U.S. Postal regulations. Customers also search for: W/Self-Seal Closure; Lightweight; 12-1/2"x18";3M Commercial Office Supply Div.,Padded Envelopes,Expansion,Mailers,Bubble,Lightweight,Self-Seal, 051131632622