Stone Cold - Joker Series - Glacier Voodoo - Single Reed Duck CallStone Cold Custom Calls are made out of Solid Surface Countertop Materials, which provide a highly dense sound chamber for air to travel through. The result of using this material is a highly responsive call that is easy to blow and resilient to the elements. Solid Surface Countertop Materials are also incredibly unique in their appearance and feel that they deliver. There is not another call on the market that has the visual appeal that a Stone Cold