runsie
Worth a lookShows a fragmented shelf (top 5 take 15% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Competition
Incredible15%top-5 click share — an open shelf
Brand share
Incredible39%top-5 brand share — no brand owns this niche
Avg price
Incredible$27.89avg listing price — sweet spot $15–$100
Price range
Great$9.76–$88.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+94.4%90-day search growth — must beat 0% to launch
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Good1,055.83avg incumbent reviews — the moat a new listing must climb
Market size
Bad$20K$20K/yr · 212K searches
Conversion
Bad0.3%search→purchase rate — share of searches ending in a sale
Returns
Bad11.6%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, runsie is a $20K/yr Amazon United States market (212K searches/yr). The top 5 brands hold 39% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 58/100.
Data updated Jul 13, 2026 · scored weekly · How we score niches
runsie market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $21K–$28K
- units × avg price
- Conversion rate
- 0.3%
- Avg BSR
- #473
- Page quality
- 0%
- Prime
- 99%
- Sponsored
- 87%
- Out of stock
- 0.7%
- Avg brand age
- 29 months
- Avg seller age
- 156 days
Competition & brand share
Clicks spread well past the top 5 (15% combined) — an open shelf where new products get seen.Brands
54 rising
Sellers
74
Top-5 brand share
39%
Top 20: 82%
Top-5 click share
15%
Top 20: 37%
Open market
56%
- CRZ YOGA10%
- Caracilia8%
- IUGA8%
- YIOIOIO7%
- ANRABESS6%
- Beaully5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +94.4% search growth over the last 90 days.Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 11.7×
Top runsie search terms
- athletic one piece20K/yr
- athletic romper with built in bra11K/yr
- red athletic romper13K/yr
- tennis romper15K/yr
- workout romper with built in bra13K/yr
- crz yoga romper15K/yr
- romper workout13K/yr
- plus size athletic romper10K/yr
- work out romper11K/yr
- activewear romper10K/yr
Top runsie 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
IUGA Workout Romper Tummy Control Padded Athletic Romper with Shorts Running Onesie Jumpsuits Summer Outfits Set Gym Clothes
IUGA$29.974.6★387 rev
AUTOMET Womens Flattering Shaping Jumpsuit Romper for Summer 2026 Black M
AUTOMET$20.254.3★2,835 rev
Ekouaer Womens Summer Sleeveless Workout Rompers Athletic Jumpsuit Double Lined Shorts One Piece Gym Yoga Clothes Black
Ekouaer$20.034.2★174 rev
Caracilia Womens Workout Athletic Romper Summer Sets Short Jumpsuits Onesie Running Outfits Exercise Gym 2025 Trendy Clothes Black M
Caracilia$28.134.2★1,153 rev
IUGA Athletic Romper with Bra Soft Workout Romper for women Tummy Control Jumpsuits with Double Lined Summer Outfits Gym Sets
IUGA$25.244.4★112 rev
Newest
by launch date
GTLIAE Summer Dress for Women 2026 Hot Shot Mini Romper Dresses Athletic Spaghetti Strap Tennis Dress Built in Shorts(Red-M)
GTLIAE$21.151,017 rev
VIUTIL Womens Athletic Dress Built in Shorts Hot Shot Mini Dress Spaghetti Straps Tennis Workout 2026 Summer Romper Dress Pink Small
VIUTIL$21.27607 rev
Ekouaer Womens Summer Sleeveless Workout Rompers Athletic Jumpsuit Double Lined Shorts One Piece Gym Yoga Clothes Black
Ekouaer$20.03174 rev
OFEEFAN Womens Athletic Dress Summer Clothes Tennis Golf Spring Bodycon Shorts Romper Backless Active Graduation Elegant Classy Black M
OFEEFAN$19.211,675 rev
QINSEN Women Rompers Sleeveless Square Neck Stretch Tummy Control Yoga Workout Jumpsuit Outfits Chestnut S
QINSEN$32.52553 rev
Trending
90-day click momentumGTLIAE Summer Dress for Women 2026 Hot Shot Mini Romper Dresses Athletic Spaghetti Strap Tennis Dress Built in Shorts(Red-M)
GTLIAE$21.154.3★
Ekouaer Womens Summer Sleeveless Workout Rompers Athletic Jumpsuit Double Lined Shorts One Piece Gym Yoga Clothes Black
Ekouaer$20.034.2★
ANRABESS Women Athletic Dress Summer Tennis Workout Active Sports Mini Romper Dress Built in Shorts Travel Vacation Clothes Black Large
ANRABESS$21.654.3★
VIUTIL Womens Athletic Dress Built in Shorts Hot Shot Mini Dress Spaghetti Straps Tennis Workout 2026 Summer Romper Dress Pink Small
VIUTIL$21.274.4★
IUGA Athletic Romper with Bra Soft Workout Romper for women Tummy Control Jumpsuits with Double Lined Summer Outfits Gym Sets
IUGA$25.244.4★
What buyers say about runsie
What buyers praise and complain about, mined from review topics.What buyers love
“fit as expected”
“Comfortable to wear”
“GOOD QUALITY”
“Nice color”
“Amazing material”
“Super flattering”
“stretch fabric”
“The material is so soft”
“Great for workout”
“Worth it”
What buyers complain about
“awkward fit”
“The material was extremely clingy”
“item was used”
“just not as good as what I expected”
“zipper kept breaking”
“However, the straps annoy me sometimes”
“Not flattering”
“Not bigger bust friendly”
“Very uncomfortable NECKLINE”
“It doesnt have much stretch”
Top return reasons
Common questions
- Is runsie profitable to sell on Amazon United States?
- The niche generates $20K/yr across 175 tracked products. 5 of 41 products launched in the last 360 days are still selling. 90-day search growth is +94.4%. Flapen's verdict: Worth a look (58/100).
- How competitive is the runsie niche?
- 54 brands and 74 sellers compete. The top 5 products take 15% of clicks and top 5 brands hold 39% of demand.
- What do buyers complain about in runsie?
- Top complaints mined from reviews: Size-Overall, Material Quality, Product Condition. The return rate is 11.6% — above our launch gate.
- When does demand for runsie peak?
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 11.7× the quietest.
- What does it cost to enter the runsie niche?
- Listings span $9.76–$88.58; the average listing price is $27.89 (sweet spot $15–$100). The average incumbent carries 1,056 reviews — the moat a new listing must climb.