Hi, we've identified 5 star C4 Manilla envelopes as one the best in its category, this video will take you through its key aspects...If you've got an important document to send in the post and are slightly anxious about it getting there in good condition, don't be!Boardbacked envelopes give you the ultimate protection thanks to their rigid board and strong paper weight.The 5 star C4 Manilla board back envelope is good quality at 115gsm â€“ that's grams per square metre.This paper weight means it's sturdy enough to protect certificates, photographs or important documents. It's also C4 size which means it can comfortably take an A4 document unfolded.It's such an easy envelope to use. After you slide in your document, to seal, all you do is peel off the tape on the flaps and press down. The adhesive will keep your document safely sealed away.Plus you're being kind to the environment with this product â€“ it displays Euroffice's Green logo, which means it's been made with minimal damage to the environment.This boardbacked envelope is the ultimate in protection and won't let you down. And remember... We won't be beaten on price.