Met-Rx make the well known Big 100 protein bar. The name comes from the weight of the heavy snack. It rocks a solid 31g of protein, 47g carbs, 29g sugar and 10g of fat. Not the lowest calorie bar but for those hunting for a treat off season this is worth looking at. The reason these mammoths get brought up is they have another variant aside from the Big 100 Brownies. Your local Met-Rx stockist will soon be offering the new mini version. Compared to the original these bite sized bars only weigh in at 33g. The contents is not a minimized ratio of the Big 100, it has slightly higher fat and lower carbs however the protein per gram is just right.