Pops' Bass Rosin may be one of the most widely recognized products in the bass world. This rosin was created by Len "Pops" Manno, who played double bass with the Houston Symphony for 41 years. It is made in Houston, Texas where the rosin is hand-mixed in small batches for high quality control and clear purity, and finally packaged in an eco-safe, airtight container and sold by weight -- 1.13 oz. per cake. For over 40 years, it has been distributed to bass players worldwide!