A Beautiful Call made from a Combination of the Wood From the Burl(a anomaly ie tumor or growth) of a tree and Stabilized with Acrylic-Both Wood and Acrylic!  Beautiful Wood where each piece is unique in it's own way with different grain patterns plus the beauty of acrylic coloring that impregnates all the wood's cells.  Almost too pretty to hunt with(I hunt with mine) and has special tone qualities since it's a hybrid of wood and acrylic, really a great call to blow as it has soft edges along with it's great looks.  Limited Quanities as the wood masters have to search the forests for these burls to cut and harvest.