The Seal Of The Sierra Club Olive Khaki Adjustable Crossbody Strap Messenger Bag is a large, solid canvas bag with a nature-inspired design featuring a hook & loop and buckle closure. It includes a crossbody strap made of canvas with an adjustable length of 18 inches, and a viscose lining. The bag has a width of 15 inches, height of 12 inches, and depth of 3 inches, making it a versatile accessory for both men and women looking for a stylish and functional messenger bag with a Sierra theme.