The Sea To Summit TravellingLight Laptop Sleeve provides water resistant, shock absorbing protection while your on the move whether traveling for business or pleasure. An EVA foam panel behind the zipper provides shock protection to all edges of the laptop and improves the sleeves resistance to water. A nylon covered access port on the edge allows the laptop to be charged while zipped inside the sleeve. 11 Sleeve fits 11 MacBook Air and many other 11 models. 13 sleeve fit 13 MacBook Pro and many other 13 models. Provides water resistant, shock absorbing protection for travel High density diecut 5mm EVA foam padding Encased in strong, water resistant Ultra Sil fabric Includes durable zippers and Hypalon grab tabs Size: 11 : 13 x 8 x 1 13: 13.5 x 9.5 x 1.1 Weight: 11: 3 oz. 13: 3.5 oz.