Show your pride for your son or daughter and the Cal Poly Humboldt Lumberjacks with this Cal Poly Mom Shirt. They've worked hard to get where they are so let everyone know how proud you are while sporting this stylish Humboldt Mom tee shirt. Sport Your Gear in this Lumberjacks Mother t-shirt and know that we are always using an environmentally friendly process and ink. NOTE: Solid colors are 100% cotton and heather colors are a Cotton/Polyester blend.