Indestructible Oversized Book Mailer - Fits trade paperbacks, picture books and multi-book orders up to 80mm thick The Lil A194+ is a capacity book mailer built for larger and thicker books than a standard A194 can hold, Royal Mail large letter compliant flat packed. With an internal capacity of 212 x 154mm, expanding up to 80mm deep, it comfortably fits trade paperbacks (216 x 135mm) and squarer, larger-format children's picture books, along with multi-book orders and box sets that need extra depth. For rare or highly valuable single books up to 24mm thick, the A194+ also offers a secure, snug fit rather than excess empty space. Manufactured using E flute corrugated cardboard with specially designed folds, it provides impact protection around the edges, minimising the risk of damage in transit. The envelope features our leading peel'n'seal / tear strip system for easy sealing and opening. For more on protecting books in transit, see our ecommerce book packaging guide. The corner stiffness of the A194+ envelope cuts damage in transit, online retailers report nearly 70% fewer returns and 25% faster packing versus bubble mailers. Struggling with storage space for your packaging? The easy stack design of the A194+ envelope is the answer. All Lil envelopes are made from 100% recycled material and are 100% recyclable, a plastic free alternative to a standard bubble envelope or bubble bag mailer. This range was developed alongside one of the internet's largest retailers, so you might recognise it. Explore the wider corrugated envelope range for other flat pack sizes. Lil Packaging is Europe's largest independent producer of book mailers and cardboard envelope mailers, trusted by 10,000+ brands. Why Choose Our Large Book Mailer A194+ Built for bigger, thicker books: trade paperbacks, children's picture books and multi-book orders up to 80mm thick in one flat pack size Secure fit for valuable books: snug protection for rare or highly valuable single books up to 24mm thick Postage smart: Royal Mail large letter compliant flat packed, keeping postage costs down Space saving: easy stack, flat pack design solves storage headaches for busy fulfilment operations Genuinely sustainable: FSC certified, Plastic Free and Zero Carbon as standard Proven at scale: developed alongside one of the internet's largest retailers Product Specification Size: 334 x 194mm flat, expands to 212 x 154 x 80mm Material: E flute corrugated cardboard, approx 1.5mm thick Closure: Tamper evident peel and seal (permanent bond) Postal fit: Royal Mail large letter tariff, flat packed Suitable book formats: Trade paperbacks (216 x 135mm), children's picture books, multi-book orders and box sets up to 80mm thick; rare/valuable single books up to 24mm Certifications: FSC certified, Plastic Free, Zero Carbon These brilliant, tough children's book mailers are one of our best selling and award winning items for a reason. If you're looking for sturdy and cost effective picture book envelopes for mailing oversized books, consider nothing else (don't use cheap book packaging that falls apart, leaves your items damaged and your customers dissatisfied). Your packaging is the first time that your customers physically experience your product. Getting it right is your chance to make the best first impression; we help you do just that. Go on...burst that bubble!
