---
title: "underdog glasses — Niche Verdict: Skip it (48/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/underdog-glasses"
last_updated: "2026-07-14T05:21:38.517Z"
locale: en
meta:
  description: "a small market ($54K/yr) — underdog glasses doesn't clear our bar today."
  "og:description": "a small market ($54K/yr) — underdog glasses doesn't clear our bar today."
  "og:title": "underdog glasses — Niche Verdict: Skip it (48/100) | Amazon United States - Flapen"
---

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# **underdog glasses**

**Skip it**

A small market ($54K/yr) — this niche doesn't clear our bar today.

Market size 13Growth 60Conversion 23Competition 46Returns 39Price 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 6% 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

## **Competition**

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%**

**Open market**

**2%**

- DEECOZY37% - FEISEDY33% - UNDERDOG11% - POCONT8% - MEETSUN4% - KIDENEI4% - Open — no brand owns it (1 brand, 2%)

## **Product shelf**

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](https://m.media-amazon.com/images/I/31hAOtIid8L.jpg)**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](https://m.media-amazon.com/images/I/31PgK1RHStL.jpg)**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](https://m.media-amazon.com/images/I/31SxzczJtRL.jpg)**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](https://m.media-amazon.com/images/I/31eUcfDt9jL.jpg)**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)](https://m.media-amazon.com/images/I/41+o7vcE7qL.jpg)**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](https://m.media-amazon.com/images/I/31eUcfDt9jL.jpg)**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](https://m.media-amazon.com/images/I/31nQGZzhNrL.jpg)**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](https://m.media-amazon.com/images/I/311DAD-uhaL.jpg)**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](https://m.media-amazon.com/images/I/31vRfLgECNL.jpg)**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](https://m.media-amazon.com/images/I/31MyFeEyGkL.jpg)**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](https://m.media-amazon.com/images/I/31vRfLgECNL.jpg)**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](https://m.media-amazon.com/images/I/31nQGZzhNrL.jpg)**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](https://m.media-amazon.com/images/I/311DAD-uhaL.jpg)**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](https://m.media-amazon.com/images/I/31MyFeEyGkL.jpg)**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](https://m.media-amazon.com/images/I/31eUcfDt9jL.jpg)**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 →~~**

## **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

## **Reviews**

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%