The Fox Big Boltz thermal has a Fox head on the front with a lightning bolt design around it. The Fox brand is the most recognized and best selling brand of motocross apparel in the world today. Fox Co. built its business by developing clothing for the high intensity, physically demanding motorsport of motocross and this holds true of their casual clothing line. We at Surf and Dirt stock the latest styles of Fox including tee shirts, hats, decals, wallets and much more.