Swiss Gear SA1775 Black with Red Accents Laptop Backpack - Fits Most 15 Inch Laptops and Tablets Padded Laptop Sleeve: Adjustable Velcro strap accommodates most 15" laptops. Elastic mesh pockets hold accessories. Airflow Back System: Multi-panel airflow design provides extra padding for comfort and maximum back support. Shoulder Strap System: Specially contoured shoulder straps are ergonomically designed with added padding for comfort and control. Water Bottle Pocket: External dual pockets feature elasticized mesh, which expands to secure various size water bottles. Audio Interface: Internal pocket includes a special pouch for MP3 players and headphone plug connects with external headphone port