Simply Protein Bar Peanut Butter Chocolate 15 Bar Box – The classic combo – dark chocolate paired with natural peanut butter (no additives, sugar or oil). It’s our best seller! Each Simply Protein Bar has 16g of protein, more fiber than sugar, and all under 160 calories. The perfect convenient snack for dieting, athletes, vegans, diabetics, and healthy eating. Our bars are gluten-free, all natural, vegan, low in fat and sugar, and under 12 ingredients.