Extremely Durable Nylon Weave. Grey with black trim and yellow zippers. Bottom of Pack Added Abrasion Resistance and Increased Durability. Spacer Airmesh Back Panel and Shoulder Straps for Added Comfort and Breathability. Laptop Sleeve Fits Most 17" Laptops. Internal Pocket Fits Most Tablets and E-Readers. Clipping Points with Reflective Tape. Internal Organizer Front Pocket with Key Clip. Hydration Port and Clip for Hanging Reservoir. Soft, Brushed Tricot Lined Sunglass Pocket. Front Stash Pocket for Extra Essentials. Compression Straps to Evenly Distribute Load. Stretch Mesh Water Bottle Pockets. Size: 20x11x8"/Pack capacity: 1725 cu.in./Volume liters: 28. Used this only for a few easy day hikes. Pack is in great shape. Love the felt-lined sunglasses pocket on top and it seems like it's a lot bigger than 28L. It's a great pack, I just have several and need to get rid of a few. New on marmot website for $109, so marked down accordingly. Description from the Marmot Site: $109.00 | #26500 Go. The Ledge is equipped equally well for city, campus, and camp.