muslin sleep sack
Skip itA small market ($24K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$23.87avg listing price — sweet spot $15–$100
Price range
Great$9.66–$53.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great33%top-5 click share — an open shelf
Growth
Great+66.7%90-day search growth — must beat 0% to launch
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Returns
Okay4.2%return rate — above 5% kills the launch gate
Review moat
Okay3,231.97avg incumbent reviews — the moat a new listing must climb
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$24K$24K/yr · 48K searches
According to Flapen's Amazon United States niche tracking, muslin sleep sack is a $24K/yr Amazon United States market (48K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Skip it — 49/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
muslin sleep sack market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $18K–$24K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #746
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 11.1%
- Avg brand age
- 41 months
- Avg seller age
- 149 days
Competition & brand share
Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.Brands
16 falling
Sellers
21
Top-5 brand share
77%
Top 20: 100%
Top-5 click share
33%
Top 20: 65%
Open market
17%
- Konssy28%
- BSTOPPT24%
- PHF9%
- Amazing Baby9%
- KeaBabies7%
- TADO MUSLIN7%
- Open — no brand owns it (10 brands, 17%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +66.7% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 4.4×
Top muslin sleep sack search terms
- muslin sleep sack27K/yr
- muslin sleep sack 6-12 months8K/yr
- muslin sleep sack 18-24 months6K/yr
- muslin sleep sack 12-18 months4K/yr
- muslin sleep sack 0-6 months4K/yr
Top muslin sleep sack 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
Konssy Muslin Baby Sleep Sack 6-12 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Blossom Pink)
Konssy$21.544.8★258 rev
BSTOPPT 2 Pack Baby Sleep Sack 12-18 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Beige & Khaki Large)
BSTOPPT$24.924.8★1,417 rev
Konssy Muslin Baby Sleep Sack 6-12 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Star Blue)
Konssy$23.544.8★258 rev
Konssy Muslin Baby Sleep Sack 0-6 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Blossom Pink)
Konssy$21.794.8★258 rev
BSTOPPT 2 Pack Baby Sleep Sack 6-12 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Gray & Pink Butterfly Medium)
BSTOPPT$24.874.8★1,417 rev
Newest
by launch date
Konssy Muslin Baby Sleep Sack 6-12 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys(Moon Coffee Check)
Konssy$24.48258 rev
Konssy Muslin Baby Sleep Sack 6-12 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Blossom Pink)
Konssy$21.54258 rev
Konssy Muslin Baby Sleep Sack 6-12 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Star Blue)
Konssy$23.54258 rev
Konssy Muslin Baby Sleep Sack 0-6 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Blossom Pink)
Konssy$21.79258 rev
Konssy Muslin Baby Sleep Sack 0-6 Months 0.8 TOG 2 Pack 100% Cotton Wearable Blanket for Babies 2-Way Zipper Breathable Sleeping Sack Infant Toddler Essentials for Girls and Boys (Woodland Sage)
Konssy$23.49258 rev
Trending
90-day click momentum
BSTOPPT 2 Pack Baby Sleep Sack 6-12 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Green & Leafy Cherry Medium)
BSTOPPT$25.294.8★
BSTOPPT 2 Pack Baby Sleep Sack 0-6 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Beige & Khaki Small)
BSTOPPT$24.534.8★
BSTOPPT 2 Pack Baby Sleep Sack 18-24 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Beige & Khaki X-Large)
BSTOPPT$27.564.8★
BSTOPPT 2 Pack Baby Sleep Sack 12-18 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Beige & Khaki Large)
BSTOPPT$24.924.8★
BSTOPPT 2 Pack Baby Sleep Sack 6-12 Months 100% Organic Cotton Muslin Baby Sleeping Bag 2-Way Zipper Wearable Blankets TOG 0.3 (Gray & Pink Butterfly Medium)
BSTOPPT$24.874.8★
What buyers say about muslin sleep sack
What buyers praise and complain about, mined from review topics.What buyers love
“Soft and breathable”
“It really helps our baby sleep well”
“The sleep sack was great quality”
“Amazingly soft and comfortable”
“Lightweight”
“Sizing is accurate”
“also the price is very fair”
“Zippers work with ease”
“breathable”
“easy to use”
What buyers complain about
“Poor fit”
“zipper broke after a couple months”
“the Velcro does not stay at all”
“broken after 2 months”
“It makes absolutely no sense how this even got past quality control is beyond me”
“Too thick”
“Deceitful listing”
“The material feels pretty cheap”
“so we're disappointed with their sleep sacks”
“Not 100% cotton”
Top return reasons
Common questions
- Is muslin sleep sack profitable to sell on Amazon United States?
- The niche generates $24K/yr across 59 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +66.7%. Flapen's verdict: Skip it (49/100).
- How competitive is the muslin sleep sack niche?
- 16 brands and 21 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 77% of demand.
- What do buyers complain about in muslin sleep sack?
- Top complaints mined from reviews: Size-Overall, Zipper Quality, Velcro Quality. The return rate is 4.2%.
- When does demand for muslin sleep sack peak?
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 4.4× the quietest.
- What does it cost to enter the muslin sleep sack niche?
- Listings span $9.66–$53.82; the average listing price is $23.87 (sweet spot $15–$100). The average incumbent carries 3,232 reviews — the moat a new listing must climb.