Here’s a short product description for Optimum Nutrition Serious Mass 6 lb — Chocolate Flavor:

Optimum Nutrition Serious Mass 6 lb (Chocolate)

A heavyweight mass-gainer designed for anyone needing big calorie boosts. Each full serving delivers ≈ 1,250 calories, 50 g of protein, and over 250 g of carbohydrates, plus a broad spectrum of 25 vitamins & minerals.

Chocolate flavor gives it a rich taste that mixes well, especially with milk.

Includes added creatine, glutamine & peptides to support recovery and muscle growth when paired with serious training.