Brenthaven Sling I, Titanium (2211101) Zero Impact made possible by Brenthavens promise to invest in Green projects that offset any impact on our environment Fits 13.3 MacBooks and MacBook Air Rugged ballistic nylon shell Internal Accessory Panel Features a strap custom fit for your iPod/ iPhone that tucks away behind the back mesh pocket. Also features a top handle for easy carrying. Custom fit water bottle pocket on the side