---
title: "Underdog Glasses — $54K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/underdog-glasses"
last_updated: "2026-08-09T15:34:08.802Z"
locale: en
meta:
description: "Niche score 47/100 · $54K/yr market · 96K searches/yr · $30.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $54K/yr market · 96K searches/yr · $30.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Underdog Glasses — $54K/yr Amazon US Niche (2026) - Flapen"
---
# **underdog glasses**
**Skip it**
A small market ($54K/yr) — this niche doesn't clear our bar today.
Market size 13Growth 60Conversion 23Competition 46Returns 33Price range 92Avg price 95Brand share 15Review moat 70Quality gap 94
**Avg price**
**Incredible****$30.32**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$12.93–$69.76**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****713.95**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+35.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Okay****4.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$54K**
$54K/yr · 96K searches
According to Flapen's Amazon United States niche tracking, underdog glasses is a $54K/yr Amazon United States market (96K searches/yr). The top 5 brands hold 94% of demand. Verdict: Skip it — 47/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **underdog glasses market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$61K–$76K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#710**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **2.9%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **178 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**7 **▼falling
**Sellers**
**9**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**57%**
Top 20: 100%
**Open market**
**2%**
- DEECOZY37% - FEISEDY33% - UNDERDOG11% - POCONT8% - MEETSUN4% - KIDENEI4% - Open — no brand owns it (1 brand, 2%)
## **Demand**
Weekly Amazon search volume, last 12 weeks — +35.9% search growth over the last 90 days.
4K3KSpike '26Apr '26May '26May '26May '26Jun '26Jun '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/underdog-glasses/trend)
## **Top underdog glasses search terms**
- **underdog glasses**50K/yr+9.1%2.0% conv. - **underdog sunglasses clip to hat**12K/yr+174.9%2.4% conv. - **clip on hat sunglasses**6K/yr+141.9%1.6% conv. - **underdog sunglasses**15K/yr-11.3%1.8% conv. - **hat sunglasses**5K/yr+119.5%0.9% conv. - **clip to cap sunglasses**4K/yr+29.8%1.7% conv. - **underdog glasses for men**4K/yr-88.9%3.9% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/underdog-glasses/search-terms)
## **Top underdog glasses 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%$11K30%$16K40%$22K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**FEISEDY Polarized Clip On Sunglasses Clip Cap Sports Sunglass UV400 Protection for Mens Womens Fishing Cycling Hiking B0356**FEISEDY**$22.13**4.5★42 rev](https://www.amazon.com/dp/B0FZTGZ433) [2**DEECOZY Outdoor Polarized Sunglasses Clip Cap Sports Sunglasses UV400 Sunglasses for Mens Womens Fishing Cycling Hiking**DEECOZY**$14.81**3.9★121 rev](https://www.amazon.com/dp/B0D3D2C6KS) [3**DEECOZY Outdoor Polarized Clip-On Sunglasses Flip Cover UV400 Protection Sunglasses for Adults Green**DEECOZY**$13.63**3.9★121 rev](https://www.amazon.com/dp/B0D3D2YH6G) [4**FEISEDY Polarized Clip On Sunglasses Clip Cap Sports Sunglasses UV400 Sunglasses for Mens Womens Fishing Cycling Hiking B0356**FEISEDY**$25.38**4.5★42 rev](https://www.amazon.com/dp/B0GV7NPPJK) [5**POCONT Clip Cap Sports Sunglasses Polarized Clip on Sunglasses Outdoor Polarized Clip Cap Glasses for Golf Cycling Fishing for Men Women (Green)**POCONT**$15.71**3.5★140 rev](https://www.amazon.com/dp/B0D3KM7SPR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**FEISEDY Polarized Clip On Sunglasses Clip Cap Sports Sunglasses UV400 Sunglasses for Mens Womens Fishing Cycling Hiking B0356**FEISEDY**$25.38**42 rev3mo ago](https://www.amazon.com/dp/B0GV7NPPJK) [**UNDERDOG Oliver Non-Polarized Hat Clip Sunglasses Lens Square-Curved Shield Screen-Ready Clarity for Displays Cap-Brim Clip UV400 Polycarbonate RX-Compatible Wraparound Fit Rose Gold**UNDERDOG**$68.55**33 rev4mo ago](https://www.amazon.com/dp/B0GQY5RQ7M) [**UNDERDOG Oliver Non-Polarized Hat Clip Sunglasses Lens Square-Curved Shield Screen-Ready Clarity for Displays Cap-Brim Clip UV400 Polycarbonate RX-Compatible Wraparound Fit Black Cherry**UNDERDOG**$68.87**33 rev4mo ago](https://www.amazon.com/dp/B0GQXYHLQL) [**UNDERDOG Rudy Polarized Hat Clip-On Sunglasses Cap Clip Lens Square Frame HD Clarity All-Day Fit Glare-Reducing Shades for Fishing Boating Driving Golf and Outdoor Use Black Cherry**UNDERDOG**$69.76**13 rev4mo ago](https://www.amazon.com/dp/B0GQY5R2Y1) [**UNDERDOG Rocky Hat Clip-On Sunglasses Polarized Shield Lens Shades for Cap Brim UV400 Lens Lightweight Glare Reduction for Golfing Running Hiking and Outdoors Slim Fit Green**UNDERDOG**$69.59**36 rev4mo ago](https://www.amazon.com/dp/B0GQGQMY35)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**UNDERDOG Rudy Polarized Hat Clip-On Sunglasses Cap Clip Lens Square Frame HD Clarity All-Day Fit Glare-Reducing Shades for Fishing Boating Driving Golf and Outdoor Use Black Cherry**UNDERDOG**$69.76**4.5★**▲ 74%**](https://www.amazon.com/dp/B0GQY5R2Y1) [**UNDERDOG Oliver Non-Polarized Hat Clip Sunglasses Lens Square-Curved Shield Screen-Ready Clarity for Displays Cap-Brim Clip UV400 Polycarbonate RX-Compatible Wraparound Fit Rose Gold**UNDERDOG**$68.55**4.1★**▲ 74%**](https://www.amazon.com/dp/B0GQY5RQ7M) [**UNDERDOG Oliver Non-Polarized Hat Clip Sunglasses Lens Square-Curved Shield Screen-Ready Clarity for Displays Cap-Brim Clip UV400 Polycarbonate RX-Compatible Wraparound Fit Black Cherry**UNDERDOG**$68.87**4.1★**▲ 73%**](https://www.amazon.com/dp/B0GQXYHLQL) [**UNDERDOG Rocky Hat Clip-On Sunglasses Polarized Shield Lens Shades for Cap Brim UV400 Lens Lightweight Glare Reduction for Golfing Running Hiking and Outdoors Slim Fit Green**UNDERDOG**$69.59**4.1★**▲ 73%**](https://www.amazon.com/dp/B0GQGQMY35) [**FEISEDY Polarized Clip On Sunglasses Clip Cap Sports Sunglasses UV400 Sunglasses for Mens Womens Fishing Cycling Hiking B0356**FEISEDY**$25.38**4.5★**▲ 73%**](https://www.amazon.com/dp/B0GV7NPPJK)
**~~View all trending →~~**
## **What buyers say about underdog glasses**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**18%
*“Great fit”*
**Quality-Overall**16%
*“The clarity is excellent”*
**Ease Of Use**14%
*“Easy to use”*
**Value For Money**12%
*“Worth it”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Comfort-Overall**4%
*“I find them comfortable”*
**Design-Overall**4%
*“a clean modern look”*
**Weight Light**3%
*“-They are super light so they dont weight down the brim of your cap”*
**Efficiency**3%
*“Work great at my job keep them down when there's no customers”*
**Color**2%
*“Love the different color options”*
### **What buyers complain about **
**Size-Overall**19%
*“A tad too big”*
**Functionality-Overall**17%
*“Did not function how I imagined, seemed cheesy and cheap”*
**Quality-Overall**9%
*“However, they feel cheap”*
**Value For Money**8%
*“Definitely not worth the high price”*
**Strength**5%
*“A bit flimsy”*
**Ease Of Use**4%
*“A little difficult to use”*
**Flexibility**4%
*“Wont fold up all the way”*
**Instructions/User Manual/Troubleshooting**3%
*“No instructions on how to swap lenses without damaging them”*
**Durability**3%
*“Poorly made and easily break”*
**Stretchability/Expandability/Elasticity**3%
*“Doesn't fit all caps due to its inability to expand”*
### **Top return reasons **
**Size-Overall**71%
**Functionality-Overall**6%
**Advertised Vs Actual Product**5%
**Comfort-Overall**2%
**Length**2%
**Shape/Style**2%
**Width**2%
**Color**1%
**Quality-Overall**1%
**Add-Ons/Attachments**1%
## **Common questions**
- **Is underdog glasses profitable to sell on Amazon United States?**
- The niche generates $54K/yr across 19 tracked products. 3 of 8 products launched in the last 360 days are still selling. 90-day search growth is +35.9%. Flapen's verdict: Skip it (47/100).
- **How competitive is the underdog glasses niche?**
- 7 brands and 9 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in underdog glasses?**
- Top complaints mined from reviews: Size-Overall, Functionality-Overall, Quality-Overall. The return rate is 4.4%.
- **What does it cost to enter the underdog glasses niche?**
- Listings span $12.93–$69.76; the average listing price is $30.32 (sweet spot $15–$100). The average incumbent carries 714 reviews — the moat a new listing must climb.
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