---
title: "33 Gram Co2 Cartridge for Life Vest — $49K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/33-gram-co2-cartridge-for-life-vest"
last_updated: "2026-08-05T21:14:27.216Z"
locale: en
meta:
description: "Niche score 60/100 · $49K/yr market · 15K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 60/100 · $49K/yr market · 15K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "33 Gram Co2 Cartridge for Life Vest — $49K/yr Amazon US Niche (2026) - Flapen"
---
# **33 gram co2 cartridge for life vest**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 12Growth 91Conversion 96Competition 18Returns 100Price range 84Avg price 95Brand share 38Review moat 92Quality gap 43
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****14.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$23.77**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****150.77**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Great****+101.0%**
90-day search growth — must beat 0% to launch
**Price range**
**Great****$10.16–$43.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$49K**
$49K/yr · 15K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, 33 gram co2 cartridge for life vest is a $49K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 83% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **33 gram co2 cartridge for life vest market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$48K–$59K**
- units × avg price
- **Conversion rate**
- **14.1%**
- **Avg BSR**
- **#287**
- **Page quality**
- **0%**
- **Prime**
- **85%**
- **Sponsored**
- **69%**
- **Out of stock**
- **11.5%**
- **Avg brand age**
- **63 months**
- **Avg seller age**
- **186 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▲rising
**Sellers**
**75**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**12%**
- SKNEXUSS32% - BKICKI18% - CODIEKEY14% - SafeMax10% - ETDOOM7% - Lancer Tactical6% - Open — no brand owns it (4 brands, 12%)
## **Top 33 gram co2 cartridge for life vest products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$5K20%$10K30%$15K40%$19K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SKNEXUSS 33G CO2 Cartridge Cylinder for Life Vest Accessory for CO2 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities-2pack**SKNEXUSS**$18.75**4.7★5 rev](https://www.amazon.com/dp/B0G4K6CD26) [2**Quality CO2 Rearming Kit Cylinder Cartridge Tank for Automatic/Manual Inflatable Life Jacket Lifejacket Life Vest Waist Pack Belt Lifesaving PFD 33 Gram**BKICKI**$11.18**4.4★275 rev](https://www.amazon.com/dp/B0CTBXZBGB) [3**33G Co2 Cartridge Cylinder for Life Vest Accessory for C02 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities**CODIEKEY**$21.44**4.4★40 rev](https://www.amazon.com/dp/B0GHK7F3KV) [4**Premium CO2 Cartridge for Life Jacket - Auto Version CO2 Rearming Kit Cylinder Tank Canister for Inflatable Lifejacket Life Vest Life Belt Pack PFD CO2 Replacement Refill Size 17G 24G 33G 60G Gram**SafeMax**$23.98**4.6★189 rev](https://www.amazon.com/dp/B081654M9N) [5**Lancer Tactical 10 Pack of 33g CO2 Cartridges for Airsoft Airguns Automatic/Manual Inflatable Life Jacket Lifejacket Life Vest Waist Pack Belt Lifesaving PFD**Lancer Tactical**$43.91**4.7★13 rev](https://www.amazon.com/dp/B0F7R1LSK6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SKNEXUSS 33G CO2 Cartridge Cylinder for Life Vest Accessory for CO2 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities-2pack**SKNEXUSS**$18.75**5 rev7mo ago](https://www.amazon.com/dp/B0G4K6CD26) [**SKNEXUSS 33G CO2 Cartridge Cylinder for Life Vest Accessory for CO2 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities-1pack**SKNEXUSS**$10.16**5 rev7mo ago](https://www.amazon.com/dp/B0G4K7C29L) [**Lancer Tactical 10 Pack of 33g CO2 Cartridges for Airsoft Airguns Automatic/Manual Inflatable Life Jacket Lifejacket Life Vest Waist Pack Belt Lifesaving PFD**Lancer Tactical**$43.91**13 rev1y ago](https://www.amazon.com/dp/B0F7R1LSK6) [**33G Co2 Cartridge Cylinder for Life Vest Accessory for C02 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities**CODIEKEY**$21.44**40 rev1y ago](https://www.amazon.com/dp/B0GHK7F3KV) [**33Gram CO2 Cylinder Cartridges for Inflatable Life Vest Automatic/Manual Life Jacket Rearming Kit**ETDOOM**$11.88**53 rev1y ago](https://www.amazon.com/dp/B0DZ76QQGV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**33Gram CO2 Cylinder Cartridges for Inflatable Life Vest Automatic/Manual Life Jacket Rearming Kit**ETDOOM**$20.08**4.1★**▲ 52%**](https://www.amazon.com/dp/B0GKH9XGMR) [**33G Co2 Cartridge Cylinder for Life Vest Accessory for C02 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities**CODIEKEY**$21.44**4.4★**▲ 50%**](https://www.amazon.com/dp/B0GHK7F3KV) [**SKNEXUSS 33G CO2 Cartridge Cylinder for Life Vest Accessory for CO2 PFD Rearming Kit for Auto/Manual Inflating Life Jacket for Adult Used for Fishing Surfing Sea/Ocean Activities-2pack**SKNEXUSS**$18.75**4.7★**▲ 47%**](https://www.amazon.com/dp/B0G4K6CD26) [**Eyson CO2 Manual Inflatable PFD-Rearming Kit Cartridge Cylinder (33G/ 150N/ Adult)**Eyson**$20.33**4.5★**▲ 25%**](https://www.amazon.com/dp/B07Y2T6ZRD) [**Premium CO2 Cartridge for Life Jacket - Auto Version CO2 Rearming Kit Cylinder Tank Canister for Inflatable Lifejacket Life Vest Life Belt Pack PFD CO2 Replacement Refill Size 17G 24G 33G 60G Gram**SafeMax**$23.98**4.6★**▲ 15%**](https://www.amazon.com/dp/B081654M9N)
**~~View all trending →~~**
## **What buyers say about 33 gram co2 cartridge for life vest**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**25%
*“There what I ordered”*
**Size-Overall**22%
*“Perfect fit”*
**Value For Money**14%
*“Great value”*
**Charging**8%
*“These re-charging units are great”*
**Quality-Overall**8%
*“Good quality”*
**Connectivity-Overall**8%
*“It connected”*
**Ease Of Use**7%
*“Easy to do this”*
**Efficiency**4%
*“Works great”*
**Assembly/Installation**3%
*“Easy to install and good quality”*
### **What buyers complain about **
**Size-Overall**22%
*“Bad fit”*
**Instructions/User Manual/Troubleshooting**11%
*“Read the directions I wasted the first one”*
**Advertised Vs Actual Product**11%
*“Misleading pic”*
**Durability**11%
*“both failed after a couple days”*
**Functionality-Overall**11%
*“The CO2 cartridges have dimples causing the indicator to not show green”*
**Defective Material/Parts**11%
*“Replacement parts for vest”*
**Design-Overall**11%
*“has a design flaw”*
**Compatibility-Overall**4%
*“Did not work on the sos brand or the other one i had that said it would fit”*
**Quality-Overall**4%
*“Pure junk”*
**Value For Money**4%
*“Not worth it”*
## **Common questions**
- **Is 33 gram co2 cartridge for life vest profitable to sell on Amazon United States?**
- The niche generates $49K/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +101.0%. Flapen's verdict: Worth a look (60/100).
- **How competitive is the 33 gram co2 cartridge for life vest niche?**
- 10 brands and 75 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in 33 gram co2 cartridge for life vest?**
- Top complaints mined from reviews: Size-Overall, Instructions/User Manual/Troubleshooting, Advertised Vs Actual Product. The return rate is 0.0%.
- **What does it cost to enter the 33 gram co2 cartridge for life vest niche?**
- Listings span $10.16–$43.91; the average listing price is $23.77 (sweet spot $15–$100). The average incumbent carries 151 reviews — the moat a new listing must climb.
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