Cheer on the Cal Poly Humboldt Lumberjacks with our most popular design and coolest looking T-shirt! No matter where you go, you can wear this simple and classic, yet stylish Lumberjacks shirt with pride! Sport Your Gear with Cal Poly fan gear and support the Lumberjacks all season long. Go Jacks! PRODUCT NOTE: Solid Colors are 100% Cotton; Heathered Colors are a Cotton and Polyester Blend