Crumpler Casual Messenger Bag The Herbas (Gunmetal) Flexible, Accessible Space: The Herbas features dual internal compartments - one for your MacBook Air or slimfit 13-inch lappie, plus a decent wodge of A4 paperwork; the other for your accessories and everyday essentials Wide, Adjustable Length Shoulder Strap: The more stuff you carry, the more you need a wide strap to distribute its weight - and the more you'll appreciate the bag's soft but strong 38mm flamed polypropylene webbing Oversized Front Closure With Compression Strap: Particularly paranoid about your precious Laptop? Want to keep the mischievous mitts of would-be pocket pickerers at arms length? Bring the oversized quick release front closure and compression strap into play. Click. Tighten. Done. What a cinch Waterproofing Measures: Be it rain, hail, sleet, snow, beer or mixed drinks, the bag's 900D outer and oversized flap are designed to weather the storm and keep what's inside dry as a nun's gusset Anti-abrasive Lining: The bag's 900D outer and 150D Rip-stop lining combine phenomenal strength with exceptional smoothness. Your clothes don't catch. Your Laptop and accessories don't get scratched