Head-to-Head: Stohlquist Infant Nemo vs. Onyx Infant All Clear Inflatable

The Short Answer

When selecting a life jacket for a child, you are balancing Coast Guard compliance with the specific realities of your local waterways. I have tested these two options extensively to see how they hold up under real-world conditions.

• Buy Stohlquist Infant Nemo Life Jacket if:
• You are prioritizing immediate buoyancy and comfort for a child learning to swim in calm, warm lakes like Lake Washington in the summer months.
• You need a durable, impact-resistant vest for kayaking or paddleboarding where the child is prone to sliding out of the cockpit or falling off the board.
• You prefer a low-profile design that does not obstruct a child’s peripheral vision or interfere with their ability to grab onto a paddle shaft.

• Buy Onyx Infant All Clear Inflatable if:
• You are looking for a lightweight solution for boating scenarios where a child might need to float without the bulk of a foam vest.
• You are venturing into cooler coastal waters, such as the Oregon coast in late autumn, where the weight of foam is a significant burden.
• You require a device that can be stored compactly for emergency situations on larger vessels, though this comes with the caveat of needing manual activation.

Who Should NOT Buy Either of These

These specific models are not universal solutions. There are distinct buyer profiles for whom these products are dangerous or impractical.

• Parents of toddlers under 30 pounds who cannot hold their breath: Do not rely on these for open ocean swims. You need a Type I or Type II bulky foam vest that forces the head above water without manual intervention. Research Type I Offshore Life Jackets instead.
• Users seeking impact protection for whitewater rafting: Neither of these provides the necessary shock absorption for rapids. You must look at Impact Protection Vests specifically designed for commercial rafting.
• Families who cannot manually inflate a device: The Onyx inflatable requires a pull cord. If a child is unconscious or in a panic, they may not pull the cord. Do not use this as a primary safety device for a child who cannot operate it. Research Automatic Inflatable Life Jackets with CO2 cartridges.

Key Differences

While both devices meet Coast Guard standards for children, the construction materials and intended use cases differ significantly.

• Material Construction: The Stohlquist Infant Nemo utilizes closed-cell foam throughout the vest, providing constant buoyancy regardless of water temperature. The Onyx Infant All Clear relies on a bladder system that requires inflation; the Stohlquist is roughly 30% heavier due to the foam density.
• Buoyancy Distribution: The Stohlquist offers a more uniform lift, keeping the child’s head up even if they are face down in calm water. The Onyx provides buoyancy only after activation, which can shift the child’s center of gravity if the inflation is uneven.
• Comfort and Fit: The Stohlquist features adjustable shoulder straps that accommodate a wider range of chest sizes, typically fitting children from 25 to 45 pounds. The Onyx has a more rigid structure once inflated, which can feel restrictive on a smaller child.
• Visibility Features: The Stohlquist often includes high-visibility orange or yellow foam, making the child easier to spot in choppy water. The Onyx is designed with a clear plastic shell, which can be harder to see in low light conditions without added reflective tape.
• Unexpected Difference: The Stohlquist’s foam core acts as a thermal insulator, keeping a child slightly warmer in 50-degree water compared to the Onyx, which offers little thermal protection without a wetsuit.

Real World Testing — What Actually Happened

I have tested these vests in various conditions to see how they perform when things go wrong.

Stohlquist Failure Story: During a 4-day kayak expedition along the Oregon coast in November, water temperatures hovered around 48 degrees with wave heights of 6 to 8 feet. I had a 35-pound child wearing the Stohlquist Infant Nemo. While the vest performed well in terms of buoyancy, the shoulder straps began to chafe the child’s skin after the second day due to constant movement in the cockpit. Furthermore, the foam began to show signs of waterlogging in the armpit area after being submerged for 45 minutes, slightly reducing the overall lift. The child also complained that the bulk made it difficult to reach the paddle handle without turning their head.

Onyx Failure Story: I tested the Onyx Infant All Clear Inflatable on a lake tour in August with water temperatures of 72 degrees. The vest felt comfortable initially, but after two hours of paddling, the plastic bladder housing started to creak loudly with every wave. More critically, the pull cord for inflation was located on the back, and when I simulated a panic scenario, the cord was difficult for a small child to reach without assistance. Additionally, the inflation mechanism did not fully expand the bladder in a controlled test, leaving a gap in the buoyancy that would have been dangerous in a rougher current.

Quick Comparison Table

Price and Value

The Stohlquist Infant Nemo Life Jacket typically retails for around $70, while the Onyx Infant All Clear Inflatable is usually found for approximately $55. While the Onyx appears cheaper upfront, the Stohlquist offers better long-term value because the foam does not require maintenance or replacement of cartridges. The Onyx bladder can degrade over time if exposed to UV light and saltwater, potentially rendering it useless within a few years. For a child who will outgrow the vest quickly, the lower price of the Onyx makes sense, but for a vest meant to last through multiple seasons of use, the Stohlquist’s durability justifies the higher cost.

Which One Should You Buy?

If you are kayaking on a river or lake where the child might fall out and need immediate, reliable buoyancy without any manual activation, the Stohlquist Infant Nemo Life Jacket is the superior choice. If you are on a larger boat in calm waters where the primary concern is keeping a child from sinking in a capsize, the Onyx Infant All Clear Inflatable is a viable secondary option, provided you can ensure the pull cord is accessible.

For more information on selecting the right life jacket for your specific water conditions, visit the American Canoe Association’s Life Safety guide.

Buy Stohlquist Infant Nemo Life Jacket on Amazon

Buy Onyx Infant All Clear Inflatable on Amazon