---
title: "Lung Tank — $52K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/sports-outdoors/lung-tank"
last_updated: "2026-08-12T15:43:48.145Z"
locale: en
meta:
description: "Amazon product research for lung tank: $52K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for lung tank: $52K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Lung Tank — $52K/mo Amazon US Product Research (2026)"
---
# **Lung Tank**
**Worth a look**
Shows a fragmented shelf (top 5 take 22% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 65Growth 84Conversion 6Competition 93Returns 22Price range 13Avg price 49Brand share 62Review moat 88Quality gap 93
**Competition**
**Great****22%**
top-5 click share — an open shelf
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Great****240.95**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Great****+82.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Good****$623K**
$623K/yr · 684K searches
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****$182.25**
avg listing price — sweet spot $15–$100
**Returns**
**Bad****5.9%**
return rate — above 5% kills the launch gate
**Price range**
**Bad****$29.69–$584.47**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Bad****0.5%**
search→purchase rate — share of searches ending in a sale
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
## **Is lung tank profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, lung tank is a $623K/yr Amazon United States market (684K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 62/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lung tank market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$365K–$456K**
- units × avg price
- **Conversion rate**
- **0.5%**
- **Avg BSR**
- **#89**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **98%**
- **Out of stock**
- **17.1%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **189 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (22% combined) — an open shelf where new products get seen.
**Brands**
**21 **▼falling
**Sellers**
**97**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**22%**
Top 20: 53%
**Open market**
**27%**
- SMACO21% - GOYOJO16% - CHIKADIV13% - VEVOR12% - SEBiger6% - UNAROWHALS5%
## **lung tank demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +82.2% search growth over the last 90 days.
30K20KSpike '24Black Friday '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Aug · busiest ÷ quietest = 5.2×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/lung-tank/trend)
## **Top lung tank search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **lung tank**223K/yr+69.6%0.2% conv. - **scuba tank**169K/yr+105.4%0.3% conv. - **mini scuba tank**75K/yr+91.9%0.5% conv. - **underwater breathing device**27K/yr+114.1%0.1% conv. - **mini scuba tank with pump**25K/yr+103.4%0.7% conv. - **lung tank with pump**28K/yr+10.5%0.2% conv. - **lungtank**16K/yr+7.3%0.1% conv. - **diving tank**12K/yr+77.9%0.3% conv. - **diving tanks**13K/yr+74.5%0.2% conv. - **dive tank**10K/yr+94.8%0.3% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/lung-tank/search-terms)
## **Top lung tank products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%2%$12K4%$25K6%$37K8%$50K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SMACO Mini Scuba Tank with Snorkel Mask 0.5L Portable Small Diving Tank with Full Face Diving Mask Reusable DOT Certified Pony Bottle Diving Cylinder Kit with High Pressure Hand Pump for Snorkeling**SMACO**$282.05**3.8★111 rev](https://www.amazon.com/dp/B0CNVQVC8G) [2**VEVOR 0.5L Mini Scuba Tank with Sub-Mask Portable Diving Tank for Underwater Breathing Reusable Lung Diving Cylinder up to 10 Minutes Dive Time Emergency Rescue Pony Bottle with Pump for Snorkeling**VEVOR**$108.37**3.5★12 rev](https://www.amazon.com/dp/B0GGGTKTX5) [3**GOYOJO 0.5L Mini Scuba Tank with Snorkel Mask Portable Underwater Air Supply for Snorkeling & Shallow Dives DOTCertified 58 Min Underwater Breath System**GOYOJO**$166.12**4.0★23 rev](https://www.amazon.com/dp/B0DJXSKV38) [4**CHIKADIV Mini Scuba Tank with Sub-Mask 0.5L Scuba Tank with Snorkel Mask Lung with Full-face Mask Underwater Breathing Mask E Black**CHIKADIV**$216.66**3.8★24 rev](https://www.amazon.com/dp/B0D9692H53) [5**SMACO Mini Scuba Tank 0.5L Portable Small Diving Tank for Underwater Breathing Reusable Diving Cylinder Lung Air Tank for Emergency Rescue Boat Cleaning Backup Air Source Pony Bottle S300**SMACO**$192.17**4.1★117 rev](https://www.amazon.com/dp/B0DQSNT7N1)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cyl-Tec S80 (80 cu ft) Aluminum Scuba Tank 3000 PSI Convertible DIN/Yoke Valve DOT/TC Certified**Blue Reef**$236.78**2 rev3mo ago](https://www.amazon.com/dp/B0GXC6X9HZ) [**OIOEEP Mini Scuba Tank with Sub-Mask 0.5L Portable Diving Lung Tank with Refill Adapter for Divers Underwater Breathing Recreational Diving Boat Cleaning Black**OIOEEP**$178.91**1 rev4mo ago](https://www.amazon.com/dp/B0GQT6YRXC) [**Portable Lung Tank Mini Scuba Diving Tank with Full Face Mask 0.5L 3000 PSI Underwater Breathing Device 6-10 Mins for Snorkeling Complete Kit with Adapter and Air Pump (Black)**SHYRVOX**$173.15**0 rev4mo ago](https://www.amazon.com/dp/B0GR5BVTH1) [**GOYOJO Mini Scuba Tank Portable Diving Lung Air Tank with DOT Certified Refillable Emergency Backup Pony Bottle for Snorkeling Underwater Breathing Training (Obsidian Orange)**GOYOJO**$85.63**5 rev4mo ago](https://www.amazon.com/dp/B0GQT7HDG5) [**UNAROWHALS 2.3L Mini Scuba Tank 25-35 Minutes Scuba Diving Tanks DOT-Certified Diving Lung Tank Portable Dive Portable Lungs 2.3L(16 Cu Ft) Capacity 3000 Psi Max Pressure Aluminum Tank**UNAROWHALS**$291.38**5 rev5mo ago](https://www.amazon.com/dp/B0GLNNZYF6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**OIOEEP Mini Scuba Tank with Sub-Mask 0.5L Portable Diving Lung Tank with Refill Adapter for Divers Underwater Breathing Recreational Diving Boat Cleaning Black**OIOEEP**$178.91**3.0★**▲ 130%**](https://www.amazon.com/dp/B0GQT6YRXC) [**GOYOJO Mini Scuba Tank Portable Diving Lung Air Tank with DOT Certified Refillable Emergency Backup Pony Bottle for Snorkeling Underwater Breathing Training (Obsidian Orange)**GOYOJO**$85.63**4.8★**▲ 129%**](https://www.amazon.com/dp/B0GQT7HDG5) [**UNAROWHALS 2.3L Mini Scuba Tank 25-35 Minutes Scuba Diving Tanks DOT-Certified Diving Lung Tank Portable Dive Portable Lungs 2.3L(16 Cu Ft) Capacity 3000 Psi Max Pressure Aluminum Tank**UNAROWHALS**$291.38**5.0★**▲ 129%**](https://www.amazon.com/dp/B0GLNNZYF6) [**Portable Lung Tank Mini Scuba Diving Tank with Full Face Mask 0.5L 3000 PSI Underwater Breathing Device 6-10 Mins for Snorkeling Complete Kit with Adapter and Air Pump (Black)**SHYRVOX**$173.15**0.0★**▲ 129%**](https://www.amazon.com/dp/B0GR5BVTH1) [**UNAROWHALS 2.3L Mini Scuba Tank 25-35 Minutes Scuba Diving Tanks DOT-Certified Diving Lung Tank Portable Dive Portable Lungs 2.3L(16 Cu Ft) Capacity 3000 Psi Max Pressure Aluminum Tank**UNAROWHALS**$293.18**5.0★**▲ 128%**](https://www.amazon.com/dp/B0GLNNZMWG)
**~~View all trending →~~**
## **What reviews say buyers love and hate about lung tank**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Build quality is great”*
**Ease Of Use**8%
*“Easy to wear”*
**Value For Money**7%
*“Worth it”*
**Portability**6%
*“Handy”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Weight Light**6%
*“this is light weight has a carry bag”*
**Water Resistance**6%
*“Great for water work”*
**Assembly/Installation**4%
*“Easy to put together”*
**Leak-Proof**3%
*“It's leakproof and an easy refill”*
**Size-Overall**3%
*“Fits perfect”*
### **What buyers complain about **
**Size-Overall**8%
*“The mask doesn't fit my face well”*
**Leak-Proof**8%
*“Leaking right outta the box”*
**Ease Of Use**8%
*“It's difficult to use”*
**Quality-Overall**7%
*“Part quality suspect”*
**Value For Money**6%
*“and more expensive”*
**Inflation/Deflation**6%
*“Takes a while to pump up by hand”*
**Pressure**5%
*“no way to equalize pressure good surface mask”*
**Instructions/User Manual/Troubleshooting**4%
*“It does not come with directions to start”*
**Durability**4%
*“However this only lasted a few minutes”*
**Certifications**3%
*“it is not TSA approved”*
### **Top return reasons **
**Size-Overall**38%
**Leak-Proof**17%
**Functionality-Overall**6%
**Advertised Vs Actual Product**6%
**Value For Money**5%
**Product Condition**3%
**Water Resistance**3%
**Weight Heavy**3%
**Comfort-Overall**3%
**Defective Material/Parts**2%
## **Common lung tank questions**
- **Is lung tank profitable to sell on Amazon United States?**
- The niche generates $623K/yr across 94 tracked products. 9 of 27 products launched in the last 360 days are still selling. 90-day search growth is +82.2%. Flapen's verdict: Worth a look (62/100).
- **How competitive is the lung tank niche?**
- 21 brands and 97 sellers compete. The top 5 products take 22% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in lung tank?**
- Top complaints mined from reviews: Size-Overall, Leak-Proof, Ease Of Use. The return rate is 5.9% — above our launch gate.
- **When does demand for lung tank peak?**
- Demand peaks in Jun–Jul–Aug; the busiest month runs 5.2× the quietest.
- **What does it cost to enter the lung tank niche?**
- Listings span $29.69–$584.47; the average listing price is $182.25 (sweet spot $15–$100). The average incumbent carries 241 reviews — the moat a new listing must climb.
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