These bubble envelopes have a bubble lining protecting against shocks & punctures, & resisting the knocks that happen during transit through the post. They have an easy to write on surface & labels adhere easily. The sides are welded, giving extra strength, preventing bursting & giving you peace of mind that your product will arrive in great condition by using a Rajabul gold bubble envelope. Manufactured from lightweight 80 gsm paper & 65 micron bubble wrap, helping to minimise postal costs. The Rajabul gold bubble envelope Taster Pack contains the following 7 assorted sized bubble postal bags 5 x PMB00G 120 x 215mm 10 x PMB0G 150 x 215mm 10 x PMB1G 180 x 265m 10 x PMB3G 230 x 335mm 5 x PMB5G 270 x 360mm 5 x PMB7G 350 x 470mm