With 560 quality calories from a blend of full-spectrum proteins, multi-source carbs, and energy-dense lipids, R1 Clean Gainer™ is a lean, mean way to amass solid gains. Each serving features a 3:1 carb to protein ratio combining 97g+ of quick-fueling carbs with 30g of complete protein from whey, milk, and casein to help add incremental size to a growing foundation.