Deluxe digital protection Made of rugged ballistic nylon, the compact Zip Pocket keeps small items like MP3 players, smart phones, and other digitalia readily accessible and protected from the elements. It attaches easily to shoulder straps or the Modular Accessory Pocket M.A.P system featured on SealLine Urban bags, packs, and totes. It has a kind fleece lining, as well as an internal pocket for small items like earphones and flash memory cards. Versatile Attachment: Works with our M.A.P System and most shoulder straps. Rugged Construction: Tough, Ballistic nylon exterior. Splash proof Protection: Coated fabric and splash proof zipper help protect contents from the elements. Friendly Interior: Fleece lining helps protect against scratches and abrasion. Dimensions: S 3 x 4, L 3.25 x 5.25.