These Jiffy bags have a bubble lining which is laminated to the paper outer to give extra strength & puncture resistance, protecting against shocks & withstanding the knocks that happen during transit through the post. The outer is manufactured from lightweight 70 gsm paper & the long lasting bubble is made from 32 micron bubble with barrier air retention technology. The sides are welded to prevent bursting & give you peace of mind that your product will arrive in great condition by using a Jiffy Airkraft gold bag. With a wide range of Jiffy bags in stock you can be sure to find the postal bag to fit your product. Jiffy Airkraft bags are also available in white for a more premium finish. Call our packaging specialists on 0800 542 44 28 to order yours & get next day delivery. Sold in packs Quantity Available in packs of 50 or 100 depending on the size of the bag. Please see our discounts for 3 or more packs if you want to order in bulk. Size & shape options These Jiffy Airkraft bags start at 90x 145mm & go up to 340x 445mm (internal opening x height). Materials Made from 32 micron bubble wrap with a 70gsm gold paper outer. Delivery information Delivered sealed in cardboard boxes.