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O'Neill Super Lite USCG Life Vest vs Onyx A/M-24 Automatic/Manual Inflatable Life Jacket

Editorial Team
Last modified at August 9, 2026
Choosing the right life jacket depends on your priorities: inherent buoyancy and straightforward safety, or a low-profile, inflatable design that stays out of your way until needed. The O'Neill Super Lite USCG Life Vest is a traditional foam vest that meets US Coast Guard Type III standards, offering reliable flotation without the need for inflation. The Onyx A/M-24, on the other hand, is an inflatable life jacket with both automatic and manual inflation, designed for comfort and minimal bulk during activities like paddling or fishing.

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O'Neill Super Lite USCG Life VestOnyx A/M-24 Automatic/Manual Inflatable Life Jacket
O'Neill Super Lite USCG Life Vest
A/M-24 Automatic/Manual Inflatable Life Jacket
Inflation Type

Not applicable — inherently buoyant

Water activated or pull cord (automatic/manual)

Foam Core

Polyethylene foam

Not applicable — inflatable bladder

Material

100% polyester shell

Nylon

Reflective Accents

N/A

Reflective material

Warranty

1 Year Limited Warranty

1 Year Limited Warranty

Attachment Points

N/A

D-ring

Fabric Denier

N/A

200 den

Meshback

N/A

N/A

Number Of Pockets

N/A

N/A

Padding

N/A

N/A

USCG Type / Performance Level

Type III

Type V inflatable; Type III performance

Design Flotation

Not specified in reviewed source

Not specified in reviewed source

Chest Size / User Weight Range

33–52 in chest

30–52 in chest; adult universal

Entry System

Quad-buckle front entry

Front buckle closure

Adjustment System

4-buckle system

Adjustable body belt

Back Profile

Standard back; high-back feature not specified

Low-profile

CO2 Cylinder / Rearming Requirement

Not applicable — inherently buoyant

Replaceable CO2 cylinder; automatic/manual inflation; manual conversion cap; cylinder weight not specified

Safety

O'Neill Super Lite USCG Life Vest

3.6/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

3.0/ 5.0

Safety is the most critical factor for any life jacket, as it directly impacts your ability to stay afloat in an emergency. For buyers, a higher safety rating means greater confidence in the jacket’s performance when it matters most. The O'Neill Super Lite holds a clear edge here, as it meets USCG Type III certification, providing consistent, inherent buoyancy for activities like wakeboarding, skiing, and tubing. It also includes reflective accents to improve visibility in low-light conditions. The Onyx A/M-24, while offering dual inflation options (automatic CO2 and manual straw), has a lower safety rating and lacks the same level of proven reliability in real-world conditions, with buyers noting limited feedback on long-term performance.

Comfort

O'Neill Super Lite USCG Life Vest

3.9/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

4.6/ 5.0

Comfort determines how long you can wear the life jacket without feeling restricted or irritated, which is especially important for extended water activities. A more comfortable jacket allows for greater freedom of movement and reduces fatigue. The Onyx A/M-24 excels in this category, with a low-profile design that wearers describe as barely noticeable, thanks to its adjustable straps and smooth neck strap that prevent chafing. The O'Neill Super Lite, while still comfortable with its segmented foam core and wide armholes, falls slightly behind due to sizing issues—some users report it runs small, and the fit can be less forgiving for all-day wear.

Durability

O'Neill Super Lite USCG Life Vest

4.7/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

4.8/ 5.0

Durability ensures your life jacket can withstand repeated use in harsh conditions, from sun and salt exposure to frequent wear and tear. A durable jacket saves you money in the long run and provides consistent performance. Both the O'Neill Super Lite and the Onyx A/M-24 score exceptionally high in this area. The O'Neill features a durable coated nylon shell with strong seams, while the Onyx uses high-quality nylon fabric with taped seams and a protective cover. The minor difference in ratings (4.7 vs. 4.8) is negligible, and both are built to last through prolonged use in and out of the water.

Lightweight

O'Neill Super Lite USCG Life Vest

4.8/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

4.8/ 5.0

A lightweight life jacket reduces fatigue and allows for greater mobility, making it ideal for active water sports where bulk can be a hindrance. Both the O'Neill Super Lite and the Onyx A/M-24 are among the lightest options in their respective categories. The O'Neill achieves this with a feather-light polyethylene foam core and minimal bulk, while the Onyx’s inflatable design inherently keeps weight to a minimum. Buyers of both products highlight their unobtrusive feel and ease of movement, making this a tie.

Visibility

O'Neill Super Lite USCG Life Vest

3.3/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

3.0/ 5.0

Visibility is crucial for being seen by others on the water, especially in low-light or high-traffic conditions. A jacket with better visibility features can enhance safety by making you more noticeable. The O'Neill Super Lite takes the lead here, offering bright color options and reflective accents to improve visibility. The Onyx A/M-24, while it includes reflective material, has limited high-visibility color options and lacks the same level of buyer feedback on visibility, resulting in a lower rating.

Breathability

O'Neill Super Lite USCG Life Vest

4.6/ 5.0

A/M-24 Automatic/Manual Inflatable Life Jacket

4.1/ 5.0

Breathability ensures you stay cool and comfortable during extended wear, particularly in warm weather or during high-exertion activities. A more breathable jacket prevents overheating and moisture buildup. The O'Neill Super Lite outperforms the Onyx A/M-24 in this category, thanks to its lightweight, quick-drying design that keeps users comfortable during long sessions on the water. While the Onyx is also designed for warm-weather use and stays relatively cool, some users note room for improvement, giving the O'Neill a slight edge.

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Conclusion & Final Verdict:

The O'Neill Super Lite USCG Life Vest is the better choice for buyers prioritizing inherent safety and simplicity. It meets USCG Type III standards, offers reliable buoyancy without inflation, and includes reflective accents for visibility. Its breathability and lightweight design make it ideal for active water sports, though sizing can be tricky.

The Onyx A/M-24 Automatic/Manual Inflatable Life Jacket shines for those who want minimal bulk and maximum comfort. Its low-profile, inflatable design is barely noticeable during wear, and the dual inflation options provide flexibility. However, its safety rating is slightly lower, and visibility options are limited.

Verdict: Choose the O'Neill Super Lite for dependable, no-fuss flotation. Opt for the Onyx A/M-24 if you prefer a barely-there feel and don’t mind the inflation system.

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