http://www.lazyrider.com - The Lazy Rider Tool Bag compliments the larger Lazy Rider Backrest bag. It is designed for use on motorcycles, ATVs, bicycles, scooters, and trikes. Like our larger bags, the interior pipe is light weight (about a pound), and it is covered with a synthetic leather fabric that is water proof. It is eleven inches long and has a five inch diameter. This small bag will never lose its shape or sag like most other similar products.