This is a Solid 160 Mix Box — 6x Solid 160, 6x Solid C 160. Maurten Solid 160 is a two-piece, oat- and rice-based chewable fuel. 40 grams of carbohydrates split into equal 20-gram servings for optimized fueling. Both options of the fast, light, low-fiber, and carbohydrate-rich go-to Solid 160 fuel in one box.