The Grateful Dead Navy Bertha Skull and Roses Tie shows many elements. Small roses are evenly spaced throughout the tie while the infamous skull and roses emblem lives in the lower corner. The back of the tie possesses delicate and beautiful hints of Bertha. This is hands down the coolest tie on the market. The Navy Bertha Skull and Roses Tie features double loops with more matching rose contrast so all heads of any shape and size can represent their love for the Dead. We strive for the highest quality so each tie is made of 100% 16 momme twill silk and traditionally silk-screen printed. No corner was cut and no detail untouched. Navy Bertha Skull and Roses Tie. Officially Licensed by the Grateful Dead.