BUILT Puff Protein Bar review

BUILT Puff bars are the light option on this list. The 12-count Mixed Box holds six flavors, two of each, with 15 to 17 grams of protein, 140 to 160 calories and 6 to 8 grams of sugar per bar depending on flavor. The texture is the selling point: a soft, airy center similar to a marshmallow, rather than the dense chew of Quest or Barebells. The protein comes from what BUILT calls a Premium Collagen Protein Blend of partially hydrolyzed whey protein isolate and collagen, with gelatin in the ingredients. A box costs $29.99, about $2.50 a bar, and BUILT ships free on orders over $20, the lowest threshold here. The trade-offs are less protein, more sugar than the 1 gram bars above, and a gluten-free status that varies by flavor, so check each one if that matters. Collagen is not a complete protein on its own, which is worth knowing if the bar is your main protein source.

Who it is for

snackers who want a light, low-calorie bar

Price

$29.99 for a 12-count mixed box ($2.50 a bar); free shipping on orders over $20.

Regular price $29.99
Quoted from the vendor pricing page on November 13, 2026.

Key features

• 15 to 17 g protein and 140 to 160 calories per bar, depending on flavor
• 6 to 8 g sugar per serving
• Premium Collagen Protein Blend of partially hydrolyzed whey protein isolate and collagen
• Soft, airy center similar to a marshmallow
• Mixed box holds six flavors, two of each

Strengths and weaknesses

• Strength: Lowest calories per bar on this list, from 140
• Strength: Free shipping on orders over $20
• Strength: Many limited-release and Sour Puff flavors
• Weakness: Less protein than most bars here, 15 to 17 g
• Weakness: 6 to 8 g of sugar, more than Quest, Barebells or David
• Weakness: Not every flavor is gluten free

Key facts

• Protein: 15 to 17 g
• Calories: 140 to 160
• Sugar: 6 to 8 g
• Pack: 12 bars
• Price per bar: $2.50

Where it ranks

BUILT Puff Protein Bar is No. 6 in our Best Protein Bars verdict.