It's a unique combination of heavy canvas and suede leather that come together to form the most durable canvas tool bags anyone has ever known. Ruffian Specialties started it's business in 1983 on the premise that it could manufacture the toughest, strongest tool bag, for the working professional tradesman. Well one of our finish carpenter customers recently posted a review with a picture of a 20 year old Ruffian Specialties tool bag on Amazon. After 20 years of daily use he finally decided it was time for a new tool bag. I assure you it will be worth your time to review our products.