20 g protein bar. The protein bar that works as hard as you do. You're not done. You're a work in progress, building toward something big. That's why we made Clif Builder's - the great-tasting protein bar that makes every ingredient count - so you can get the most out of your workout. Builder's has 20 g of complete protein, the vitamins and minerals you need to boost protein metabolism, and carbohydrates for sustained energy. Builder's never contains ingredients like artificial sweeteners, sugar alcohols or trans fats. Every Builder's ingredient serves a purpose, so it can best serve you - and all you're working toward. - Gary, Founder and Owner of Clif Bar & Company. 1% for the Planet member. Low Glycemic: Low glycemic foods digest slowly for prolonged levels of satiation and energy. We source ingredients that are not genetically engineered. 35% organic ingredients.