Originals have a Lifespan Warranty against maker's defects - predicted lifespan of around 200 works by using with appropriate treatment We then arrive at our 45µ bag. For all those of you that have adopted the start of bubble bag, you'll try to remember the 250µ bag which we discontinued https://www.redmontpkg.co.uk/blog/2025/04/11/what-are-corrugated-envelopes-the-complete-guide/