Gossamer Gear Gorilla 50 Ultralight Backpack vs Black Diamond Beta Light 45 Pack

Editorial Team
Last modified at July 22, 2026
When choosing between the Gossamer Gear Gorilla 50 and the Black Diamond Beta Light 45, consider what matters most for your adventures. The Gorilla 50 is exceptionally comfortable and offers easy access to your gear, making it perfect for long-distance hikes where comfort and convenience are key. On the other hand, the Beta Light 45 stands out for its durability and water resistance, making it a great choice for rugged terrain and wet conditions.

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Gossamer Gear Gorilla 50 Ultralight BackpackBlack Diamond Beta Light 45 Pack
Gorilla 50 Ultralight Backpack
Black Diamond Beta Light 45 Pack
Weight

31.2 oz

23.6 oz

Capacity

50 L total; 32 L medium main body

45 L

Fabric Type

70D and 100D recycled Robic nylon

Challenge Sailcloth Ultra 200 PE with 100D nylon ripstop accents

Hip Belt

S/M Curved (Small) M Straight (Medium/Large)

Removable

Seam Sealing

No — seams are not weather-sealed

Yes — taped seams

Warranty

Lifetime

Practical Lifetime

Fabric Denier

70D and 100D

200D body; 100D nylon accents

Hip Belt Size

Curved S/M: 28.5–56 in; Curved M/L: 32.5–60 in; Straight S: 26–53.5 in; M: 30–57.5 in; L: 34–61.5 in

XS: 24–42 in; S: 27–45 in; M: 29–48 in; L: 31–51 in

Side Compression Straps

Yes

Yes

Roll Top Closure

No

Yes

Durability

Gorilla 50 Ultralight Backpack

3.9/ 5.0

Black Diamond Beta Light 45 Pack

4.8/ 5.0

Durability is crucial for ultralight backpacks as it ensures the pack can withstand the rigors of long hikes and rough terrain. A more durable pack means fewer worries about wear and tear, allowing you to focus on your adventure. The Black Diamond Beta Light 45 excels in this category with a rating of 4.8/5, praised for its well-made, impeccable construction and high-quality materials like Challenge Sailcloth Ultra 200 PE. Buyers highlight its toughness, abrasion resistance, and lifetime warranty. In contrast, the Gossamer Gear Gorilla 50, with a durability rating of 3.9/5, is also rugged and durable but falls short compared to the Beta Light 45. The Beta Light 45's superior durability makes it the clear winner for those prioritizing long-term reliability.

Comfort

Gorilla 50 Ultralight Backpack

4.8/ 5.0

Black Diamond Beta Light 45 Pack

4.3/ 5.0

Comfort is essential for long-distance hiking, as a comfortable pack can significantly reduce fatigue and strain. The Gossamer Gear Gorilla 50 shines in this category with a rating of 4.8/5, praised for its comfortable, foam-padded waist straps, hip belts, and chest straps. Buyers describe it as insanely comfortable with no pressure points, making it ideal for extended wear. The Black Diamond Beta Light 45, with a comfort rating of 4.3/5, is also comfortable but not as highly praised as the Gorilla 50. Its running vest-style harness and padded back panel provide good support, but the Gorilla 50's superior comfort makes it the better choice for those prioritizing a pleasant carry experience.

Fit

Gorilla 50 Ultralight Backpack

4.1/ 5.0

Black Diamond Beta Light 45 Pack

4.4/ 5.0

A good fit ensures the pack sits well on your body, distributing weight evenly and reducing strain. The Black Diamond Beta Light 45 leads in this category with a rating of 4.4/5, praised for its adjustable shoulder straps, removable hip belt, and modular webbing strap. Buyers appreciate its body-hugging design and versatility in fitting different body types. The Gossamer Gear Gorilla 50, with a fit rating of 4.1/5, is also adjustable and well-fitted but does not offer the same level of customization as the Beta Light 45. The Beta Light 45's superior fit makes it the better choice for those seeking a pack that can be tailored to their body.

Accessibility

Gorilla 50 Ultralight Backpack

4.7/ 5.0

Black Diamond Beta Light 45 Pack

3.6/ 5.0

Easy access to your gear can save time and effort on the trail, allowing you to quickly grab what you need without stopping for long. The Gossamer Gear Gorilla 50 excels in this category with a rating of 4.7/5, praised for its easy access, tons of pockets, and water bottle holders. Buyers highlight its stretchy front pockets and compression straps, making it easy to get stuff in and out of. The Black Diamond Beta Light 45, with an accessibility rating of 3.6/5, is less praised for its accessibility, with some buyers finding it difficult to get things out of the front pocket. The Gorilla 50's superior accessibility makes it the better choice for those prioritizing quick and easy gear access.

Ventilation

Gorilla 50 Ultralight Backpack

3.4/ 5.0

Black Diamond Beta Light 45 Pack

3.3/ 5.0

Good ventilation helps keep you cool and dry, reducing sweat and discomfort during long hikes. Both packs have similar ventilation ratings, with the Gossamer Gear Gorilla 50 at 3.4/5 and the Black Diamond Beta Light 45 at 3.3/5. The Gorilla 50 is praised for its ventilated seat pad and padding and airflow, while the Beta Light 45 is noted for its padded back panel providing cushioning and ventilation. Neither pack stands out significantly in this category, making it a tie for those prioritizing ventilation.

Water Resistance

Gorilla 50 Ultralight Backpack

2.8/ 5.0

Black Diamond Beta Light 45 Pack

4.4/ 5.0

Water resistance is important for keeping your gear dry in wet conditions, ensuring you stay comfortable and your belongings remain protected. The Black Diamond Beta Light 45 leads in this category with a rating of 4.4/5, praised for its seam-sealed, waterproof fabric and roll-top design. Buyers highlight its ability to keep gear bone dry. The Gossamer Gear Gorilla 50, with a water resistance rating of 2.8/5, is less praised for its water resistance, with some buyers noting it absorbs a good amount of water. The Beta Light 45's superior water resistance makes it the better choice for those prioritizing protection from the elements.

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Conclusion & Final Verdict:

In conclusion, the Gossamer Gear Gorilla 50 is the better choice for those prioritizing comfort and accessibility, making it ideal for long-distance hikes with frequent gear access. On the other hand, the Black Diamond Beta Light 45 excels in durability and water resistance, making it better suited for rugged, wet conditions. Consider your specific needs and priorities when choosing between these two excellent ultralight backpacks.

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