This is one of the best hemp sling bags we have ever made. It has very wide, heavy duty YKK zippers on the side for an easy opening while wearing the sling bag. Easy to get stuff out while riding and you don't have to remove the bag. The interior has a nice cotton lining and a zipper pocket for storing wallets, keys and other small items. The design of the bag allows it to expand considerably and is able to hold a lot of stuff. The bag measures about 16 inches from top to bottom and 12 inches from left to right.