Sea to Summit Ultra-Sil Daypack vs Mountain Hardwear Lickety Split 20L Backpack

Editorial Team
Last modified at May 28, 2026
Choosing the right daypack often comes down to a trade-off between weight and functionality. The Sea to Summit Ultra-Sil Daypack is the ultimate minimalist choice, weighing just 2.5 ounces and packing down to the size of a potato, making it ideal for travelers or hikers needing a backup. In contrast, the Mountain Hardwear Lickety Split 20L offers a more traditional hiking experience with padded straps, a structured back panel, and multiple pockets for gear organization, though it comes in significantly heavier at 21.3 ounces. While both packs offer similar capacity around 1,220 cubic inches, they serve distinctly different needs on the trail. This comparison breaks down how their differences in comfort, durability, and organization impact your hiking experience.

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Sea to Summit Ultra-Sil DaypackMountain Hardwear Lickety Split 20L Backpack
Ultra-Sil Daypack
Mountain Hardwear Lickety Split 20L Backpack
Capacity

1,220 cu in

1,221 cu in

Weight

2.5 oz

21.3 oz

Material

100% Nylon (Ultra-Sil 30D siliconised high-tenacity CORDURA® Nylon fabric)

210D high-tenacity CORDURA ripstop shell, Ripstop monomesh

Hip Belt

No hip belt

Removable webbing hip belt with SR buckle

Back Panel Type

Unstructured fabric back panel

Compression-molded dual-density back panel

Warranty

Lifetime warranty

Limited Lifetime

Sternum Strap

No sternum strap

Two removable sternum straps

Comfort

Ultra-Sil Daypack

4.1/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

3.7/ 5.0

Comfort is critical for daypacks as it determines how long you can carry your gear without fatigue or strain. A pack with well-designed straps and back support distributes weight effectively, whereas a poorly designed one can dig into shoulders or cause back pain during extended wear. The Sea to Summit Ultra-Sil Daypack scores higher here with a 4.1 rating, praised by users for its well-designed straps that reduce shoulder strain despite its minimal construction. The Mountain Hardwear Lickety Split 20L offers decent comfort with padded straps and a back panel, but it trails slightly with a 3.7 rating and fewer mentions of long-term wearability. For hikers prioritizing a comfortable carry over long distances, the Sea to Summit's ergonomic design edges out the Mountain Hardwear option.

Durability

Ultra-Sil Daypack

3.9/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

3.4/ 5.0

Durability dictates whether a pack will survive rough trail conditions, abrasion from rocks, and years of regular use. Buyers need to know if the materials can withstand the elements or if they are prone to tearing under stress. The Sea to Summit Ultra-Sil Daypack leads with a 3.9 rating, backed by a lifetime warranty and materials described as robust, though some users note wear over time with rough handling. The Mountain Hardwear Lickety Split 20L has a lower 3.4 rating, with limited feedback focusing mainly on its reinforced base offering solid protection for regular use. While the Sea to Summit uses thinner silnylon, its warranty and overall user sentiment regarding longevity give it the advantage for those seeking a pack that lasts.

Ventilation

Ultra-Sil Daypack

2.8/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

3.0/ 5.0

Ventilation is essential for preventing sweat buildup on the back during warm weather or intense activity, directly affecting thermal comfort. A lack of airflow can turn a short hike into a sticky, uncomfortable experience, especially in hot climates. The Mountain Hardwear Lickety Split 20L takes a slight lead with a 3.0 rating, though feedback is sparse and does not highlight it as a major standout feature. The Sea to Summit Ultra-Sil Daypack scores lower at 2.8, with specific user complaints about limited airflow causing sweat buildup on the back during longer hikes. While neither pack excels in this category, the Mountain Hardwear model is marginally better for those concerned about heat retention.

Organization

Ultra-Sil Daypack

4.7/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

4.3/ 5.0

Effective organization allows hikers to access essentials like water, snacks, and electronics quickly without unpacking the entire bag. A well-organized pack features strategic pockets, compartments, and easy-access zippers that keep gear secure and sorted. The Sea to Summit Ultra-Sil Daypack dominates this category with a 4.7 rating, featuring double-zippered compartments and ample capacity that users find surprisingly effective for its size. The Mountain Hardwear Lickety Split 20L also performs well with a 4.3 rating, offering thoughtful exterior storage, a top flap pocket, and specific slots for water bottles and electronics. Despite the Mountain Hardwear's more traditional pocket layout, the Sea to Summit's efficient use of space and accessible design makes it the superior choice for organization.

Stability

Ultra-Sil Daypack

3.1/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

3.0/ 5.0

Stability refers to how well a pack stays balanced and secure against the body, preventing it from swaying or shifting while walking over uneven terrain. A stable pack improves balance and reduces the risk of tripping or strain caused by a shifting load. Both the Sea to Summit Ultra-Sil Daypack and the Mountain Hardwear Lickety Split 20L receive average scores of 3.1 and 3.0 respectively, with insufficient buyer feedback to declare a clear winner. Users have not provided enough detail to treat stability as a major benefit or drawback for either model. Consequently, both packs offer a similar, unremarkable level of stability that may depend more on how the pack is loaded than its inherent design.

Adjustability

Ultra-Sil Daypack

4.3/ 5.0

Mountain Hardwear Lickety Split 20L Backpack

3.6/ 5.0

Adjustability ensures the pack fits a wide range of body types, allowing users to customize strap length and tension for a secure, personalized fit. Proper adjustment is key to transferring weight to the hips and preventing shoulder fatigue. The Sea to Summit Ultra-Sil Daypack excels with a 4.3 rating, where users highlight its adjustable straps and lightweight design as versatile for different activities and body shapes. The Mountain Hardwear Lickety Split 20L scores lower at 3.6, with limited feedback noting that its adjustable shoulder straps help dial in a fit but lacking the same level of praise for versatility. For hikers who need a pack that adapts easily to various body types, the Sea to Summit offers a more robust adjustment system.

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Conclusion & Final Verdict:

The choice between these two packs depends entirely on your priority: extreme weight savings or feature-rich comfort. The Sea to Summit Ultra-Sil Daypack is the clear winner for ultralight enthusiasts, travelers, and those needing a compact emergency backup. It wins in comfort, organization, adjustability, and durability ratings, offering a surprisingly capable pack that weighs almost nothing. However, its lack of a hip belt, sternum strap, and structured back panel means it is not ideal for heavy loads or long, technical hikes.

Conversely, the Mountain Hardwear Lickety Split 20L is the better choice for traditional day hikers who value organization, padding, and stability. While it is significantly heavier and scores lower in overall ratings, its removable hip belt, sternum straps, and compression-molded back panel provide a more secure and comfortable carry for moderate loads. If you need a dedicated daypack for regular trail use with plenty of pockets, choose the Mountain Hardwear; if you need a packable backup that disappears in your bag, choose the Sea to Summit.

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