The perfect completely compostable alternative to plastic poly mailers is here. These mailers are 100% biodegradable and a great step toward sustainable packaging. Each mailer is made from renewable bioplastic derived from corn starch and combined with PBAT for strength and flexibility. They can be tossed straight into your compost at home or in your green trash bin. It takes approximately 90 days for this mailer to begin to breakdown in a compost environment. Approximate Dimensions 12” x 15”