---
title: "Pair of Thieves Underwear Men — $641K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/pair-of-thieves-underwear-men"
last_updated: "2026-08-11T20:31:43.291Z"
locale: en
meta:
description: "Niche score 56/100 · $641K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $641K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Pair of Thieves Underwear Men — $641K/yr Amazon US Niche (2026) - Flapen"
---
# **pair of thieves underwear men**
**Worth a look**
Shows a sweet-spot price point ($31.98 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 66Growth 41Conversion 20Competition 90Returns 90Price range 95Avg price 95Brand share 7Review moat 24Quality gap 42
**Avg price**
**Incredible****$31.98**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$16.21–$55.33**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****25%**
top-5 click share — an open shelf
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$641K**
$641K/yr · 1.2M searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+13.0%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****6,326.66**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****97%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, pair of thieves underwear men is a $641K/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 97% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pair of thieves underwear men market data**
- **Units sold / yr**
- **20K–25K**
- avg 100–250/product
- **Revenue / yr**
- **$640K–$800K**
- units × avg price
- **Conversion rate**
- **1.6%**
- **Avg BSR**
- **#388**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **99%**
- **Out of stock**
- **10.8%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **129 days**
## **Competition & brand share**
Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.
**Brands**
**9 **▲rising
**Sellers**
**26**
**Top-5 brand share**
**97%**
Top 20: 100%
**Top-5 click share**
**25%**
Top 20: 58%
**Open market**
**2%**
- Pair of Thieves74% - BAMBOO COOL16% - Expertoftio4% - INNERSY2% - Warriors & Scholars1% - Hanes1% - Open — no brand owns it (3 brands, 2%)
## **Top pair of thieves underwear men search terms**
- **pair of thieves boxer briefs**507K/yr+13.6%1.5% conv. - **pair of thieves**238K/yr+10.9%0.8% conv. - **pair of thieves underwear**143K/yr+10.2%1.0% conv. - **puma boxers briefs for men**40K/yr+10.5%0.7% conv. - **hanes long leg boxer briefs men**33K/yr+4.7%0.8% conv. - **new balance underwear**28K/yr+29.5%0.5% conv. - **pair of thieves boxers**33K/yr+16.8%0.7% conv. - **new balance boxers**25K/yr+7.0%0.1% conv. - **pair of thieves long boxer briefs**21K/yr+2.8%0.6% conv. - **pair of thieves underwear men**29K/yr-14.2%1.2% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/pair-of-thieves-underwear-men/search-terms)
## **Top pair of thieves underwear men 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%2%$13K4%$26K6%$38K8%$51K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Pair of Thieves Men Super Fit Long Boxer Briefs | Underwear for Men | 3 Pack | Lightweight Soft 4-Way Stretch Fabric | Moisture Wicking for the Gym Work and Daily Comfort | Everyday Boxer Briefs**Pair of Thieves**$32.79**4.6★3,642 rev](https://www.amazon.com/dp/B08L8HL3ZN) [2**Pair of Thieves Men Super Fit Boxer Briefs | Underwear for Men | 3 Pack | Ultra Soft Quick-Dry Fabric with 4-Way Stretch | Moisture Wicking for Work Training and Comfort | Everyday Boxer Briefs**Pair of Thieves**$32.28**4.6★3,597 rev](https://www.amazon.com/dp/B08KBH7WJ6) [3**Pair of Thieves Men Super Fit Boxer Briefs | Underwear for Men | 3 Pack | Ultra Soft Quick-Dry Fabric with 4-Way Stretch | Moisture Wicking for Work Training and Comfort | Everyday Boxer Briefs**Pair of Thieves**$33.49**4.6★3,597 rev](https://www.amazon.com/dp/B08KC6BS7B) [4**Pair of Thieves Men Every Day Kit Boxer Briefs | Underwear for Men | 4 Pack | Soft Tagless Cotton Spandex Blend | Moisture Wicking for the Gym Work and Daily Comfort | Everyday Boxer Briefs**Pair of Thieves**$19.61**4.3★12,684 rev](https://www.amazon.com/dp/B08L8JGNGR) [5**Expertoftio Mens Underwear Viscose from Bamboo Mens Boxer Briefs 6 Inch Moisture Wicking Underwear for Men Pack Open Fly Colorful Pack Medium**Expertoftio**$31.89**4.4★840 rev](https://www.amazon.com/dp/B0FP941BX9)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Expertoftio Mens Underwear Viscose from Bamboo Mens Boxer Briefs 6 Inch Moisture Wicking Underwear for Men Pack Open Fly Colorful Pack Medium**Expertoftio**$31.89**840 rev10mo ago](https://www.amazon.com/dp/B0FP941BX9) [**Pair of Thieves Men Super Fit Trunks | Underwear for Men | 3 Pack | Breathable Mesh Polyester Spandex Blend | Moisture Wicking for Workouts Work and Daily Comfort | Everyday Secure Fit Trunks**Pair of Thieves**$34.43**2,971 rev1y ago](https://www.amazon.com/dp/B0DKZRY2NR) [**Pair of Thieves Men Every Day Kit Boxer Briefs | Underwear for Men | 4 Pack | Soft Tagless Cotton Spandex Blend | Moisture Wicking for the Gym Work and Daily Comfort | Everyday Boxer Briefs**Pair of Thieves**$19.68**12,684 rev1y ago](https://www.amazon.com/dp/B0DKZMXLHF) [**Pair of Thieves Men Every Day Kit Boxer Briefs | 8 Pack Underwear for Men | Soft Tagless Cotton Spandex Blend | Black/Grey 2.0 | Large**Pair of Thieves**$35.84**605 rev1y ago](https://www.amazon.com/dp/B0DKZZLSYT) [**Pair of Thieves Men Every Day Kit Boxer Briefs | Underwear for Men | 4 Pack | Soft Tagless Cotton Spandex Blend | Moisture Wicking for the Gym Work and Daily Comfort | Everyday Boxer Briefs Black**Pair of Thieves**$19.98**668 rev1y ago](https://www.amazon.com/dp/B0DK5XG8N6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BAMBOO COOL Mens Ultra ComfortSoft Underwear Moisture Wicking & Breathable No Ride Up Boxer Briefs with Fly Multipack**BAMBOO COOL**$50.71**4.6★**▲ 53%**](https://www.amazon.com/dp/B0CNJQC42M) [**Pair of Thieves Men Super Fit Trunks | Underwear for Men | 3 Pack | Breathable Mesh Polyester Spandex Blend | Moisture Wicking for Workouts Work and Daily Comfort | Everyday Secure Fit Trunks**Pair of Thieves**$34.43**4.5★**▲ 53%**](https://www.amazon.com/dp/B0DKZRY2NR) [**Pair of Thieves Men Every Day Kit Boxer Briefs | Underwear for Men | 4 Pack | Soft Tagless Cotton Spandex Blend | Moisture Wicking for the Gym Work and Daily Comfort | Everyday Boxer Briefs Black**Pair of Thieves**$19.98**4.4★**▲ 43%**](https://www.amazon.com/dp/B0DK5XG8N6) [**Pair of Thieves Men Super Fit Trunks | Underwear for Men | 3 Pack | Breathable Mesh Polyester Spandex Blend | Moisture Wicking for Workouts Work and Daily Comfort | Everyday Secure Fit Trunks Black**Pair of Thieves**$32.53**4.5★**▲ 43%**](https://www.amazon.com/dp/B08CS3P651) [**Expertoftio Mens Underwear Viscose from Bamboo Mens Boxer Briefs 6 Inch Moisture Wicking Underwear for Men Pack Open Fly Colorful Pack Medium**Expertoftio**$31.89**4.4★**▲ 42%**](https://www.amazon.com/dp/B0FP941BX9)
**~~View all trending →~~**
## **What buyers say about pair of thieves underwear men**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**28%
*“Excellent Comfortable”*
**Size-Overall**15%
*“not too tight”*
**Quality-Overall**8%
*“Overall, I am very impressed with the quality and comfort of this 7-unit package and consider them a worthwhile investment”*
**Soft Feel**7%
*“Comfortable and soft”*
**Breathability**6%
*“Breathes well”*
**Material Quality**5%
*“Very breathable material”*
**Value For Money**4%
*“They are affordable”*
**Advertised Vs Actual Product**2%
*“As described”*
**Color**2%
*“Love the colors”*
**Stretchability/Expandability/Elasticity**2%
*“Fabric is stretchy”*
### **What buyers complain about **
**Size-Overall**15%
*“Longer than expected”*
**Durability**10%
*“Not very durable”*
**Quality-Overall**9%
*“Cheaply made”*
**Material Quality**6%
*“Material is awful”*
**Comfort-Overall**5%
*“Cheap and uncomfortable”*
**Value For Money**4%
*“Not worth the price”*
**Gap/Hole**3%
*“fabric developes holes”*
**Advertised Vs Actual Product**2%
*“not what it says it is”*
**Waist Fit**2%
*“They have wider waist bands”*
**Stitch/Finish/Polish**2%
*“Stitching comes apart”*
### **Top return reasons **
**Size-Overall**46%
**Waist Fit**11%
**Material Quality**10%
**Length**9%
**Thigh Fit**5%
**Advertised Vs Actual Product**4%
**Comfort-Overall**2%
**Thin**2%
**Value For Money**1%
**Color**1%
## **Common questions**
- **Is pair of thieves underwear men profitable to sell on Amazon United States?**
- The niche generates $641K/yr across 86 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +13.0%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the pair of thieves underwear men niche?**
- 9 brands and 26 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in pair of thieves underwear men?**
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 1.3%.
- **What does it cost to enter the pair of thieves underwear men niche?**
- Listings span $16.21–$55.33; the average listing price is $31.98 (sweet spot $15–$100). The average incumbent carries 6,327 reviews — the moat a new listing must climb.
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