Moshi Hexa Lightweight Backpack - Forest Green for Laptops up to 15" , Single-panel Construction, Weather-resistant, RFID Pocket - Lightweight backpack with simple yet refined aesthetic to comfortably carry for work, to the gym or on your next city adventure. Single-panel construction requires only 4 stitches, giving the bag its unique shape while keeping it ultra lightweight at only 23 oz (650 g) and a capacity of 20 L.: