Our Compostable Satchels are Certified with Australian Standards AS5810 & are Home Compostable, meaning you can throw the used satchel into the compost and it breaks down within 180 days. 2 sizes are available : 255*325 (Medium)， 395*455 （Large Size） In packs of 50, 100, 250 or 500 bags. You need more than 500? Then you need to contact me directly. Compostable Material: Corn Starch Black exterior & interior for privacy protection Strong, Sturdy, Waterproof Our mailers feature a small logo on the front - more space for your own brand promotion. Perfect Choice for e-commerce business to promote their bands Each bag features two sticky strip enclosures so each bag can be used twice. 1.5kg for 100 Medium Size Mailers