Size: 14" x 16" 100% Polyester. Drawstring closure. Drawstring top is controlled by the nylon rope shoulder straps and he weight of whatever is inside. Cinches shut at the top when you sling it on your back. Easy to clean, water from the outside does not penetrate the bag. Wipes up quickly and easily. Hand washable or machine washable. This is a great backpack for casual life. You can take it with you anywhere. It's the perfect gift for birthdays, Christmas, Halloween, etc. This is a great backpack for casual life. You can take it with you anywhere. It's the perfect gift for birthdays, Christmas, Halloween, etc.