Met-Rx Size Up
MET-Rx Xtreme size up has one of the highest protein contents per serving on the market. Providing 60g of protein and 600 calories per 4 scoop serving, xtreme size up should be your only choice for serious mass gaining! If you are one of those people who have a tough time packing on solid, powerful mass, try met-rx xtreme size up, specially designed for hard gainers who want to gain weight and pack on mass. MET-Rx xtreme size up features four optimizer blends to help you keep growing! Our specially selected nutrients are designed to meet your body's needs for both immediate and sustained energy and protein synthesis.