Post your item with confidence with this waterproof, tear and puncture resistant Poly Mailer.This pack of 100 opaque mailer\'s are co-ex degradable and has a strong secure seal strip closure, making them more hygienic than gummed mailers.This envelope is lightweight to save on postage costs and accepts handwriting, stamps and franking labels.This pack of poly mailers are ideal for use in the office or home business.. 165 x 240mm. 100% Recyclable. Sizing is approximate