The “Packin Heat” Chapter is here! This is our softest Tri-Blend Biker T-Shirt we have, it’s a custom blend of 50% Cotton 25% Rayon and 25% Polyester! Once you feel it you will agree! Polyester helps reduce the possibility of t-shirt shrinkage, the cotton helps the t-shirt breathe, and the rayon gives this shirt a smooth softer texture for a more flattering look.