Handcrafted from durable genuine leather for strength and durability. It installs easily on the bike. The special waterproof suede ensures that the weather does not affect the bag in the slightest. Here are the spaces available: 6 slots for Allen keys (hex keys), 10 slots for wrenches, 4 additional slots for pliers/screwdrivers and a zippered pocket for change. Closed dimensions: 17cm diameter x 27cm long. Open dimensions: 43cm high x 27cm wide.