CARpe Diem CARpe Diem CARpe Diem CARpe Diem Book Sleeve Gifts for Book Lovers - A book sleeve with a vintage cars design to protect your books from bumps and bruises on the go! £12.85 Quantity: at £12.85 each Add To Basket All book sleeves are handmade and limited editions of 1-8 pieces per design only, making them all the more special. Each sleeve measures approximately 17.3cm (W) x 24cm (H). You can easily fit your average paperback, trade paperback and small hardback. Materials used for this sleeve are Cotton, Polyester interfacing and Calico.