Pops Bass Rosin is an extremely soft, light amber bass rosin packaged in a hinged-lidded plastic case. 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 to ensure high quality and purity. Pops Bass Rosin has been used by bass players worldwide for more than 30 years.