sleep sacks 12-18 months
Skip itStrong incumbent ratings (4.7★) — this niche doesn't clear our bar today.
Avg price
Incredible$28.19avg listing price — sweet spot $15–$100
Price range
Great$12.24–$75.79cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great36%top-5 click share — an open shelf
Brand share
Good71%top-5 brand share — brands hold most of the demand
Growth
Okay+16.4%90-day search growth — must beat 0% to launch
Review moat
Okay2,328.82avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.1%return rate — above 5% kills the launch gate
Conversion
Okay2.5%search→purchase rate — share of searches ending in a sale
Market size
Bad$93K$93K/yr · 132K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, sleep sacks 12-18 months is a $93K/yr Amazon United States market (132K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Mar–Apr. Verdict: Skip it — 48/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
sleep sacks 12-18 months market data
- Units sold / yr
- 3K–4K
- avg 0–100/product
- Revenue / yr
- $85K–$113K
- units × avg price
- Conversion rate
- 2.5%
- Avg BSR
- #423
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 0.7%
- Avg brand age
- 45 months
- Avg seller age
- 170 days
Competition & brand share
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.Brands
22 rising
Sellers
27
Top-5 brand share
71%
Top 20: 99%
Top-5 click share
36%
Top 20: 72%
Open market
25%
- KeaBabies30%
- Okayinn13%
- FIEMOL12%
- Wrrernsin9%
- Yoofoss7%
- EasyFi4%
Demand & seasonality
Weekly Amazon search volume, last 75 weeks — +16.4% search growth over the last 90 days.Peak months: Mar, Apr · busiest ÷ quietest = 3.3×
Top sleep sacks 12-18 months search terms
- sleep sacks 12-18 months34K/yr
- keababies sleep sack19K/yr
- summer sleep sack 12-18 months6K/yr
- 0.5 tog sleep sack 12-18 months6K/yr
- 5 tog sleep sack 12-18 months5K/yr
- sleep sack 12-18 months 1.0 tog14K/yr
- sleepsack 12-18 months9K/yr
- kea babies sleep sack7K/yr
- cotton sleep sack 12-18 months7K/yr
- weighted sleep sack 12-18 months10K/yr
Top sleep sacks 12-18 months 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
2-Pack Baby Sleep Sacks Zipper Wearable Blanket - 100% Organic Cotton 0.5TOG Soft Lightweight Toddler Sleeping Sack 6-12 months Easy to Wear Newborn Swaddles Sleepsack (BumbleBear M)
KeaBabies$25.444.7★278 rev
FIEMOL Baby Sleep Sack 12-18 Months 100% Cotton Sleeping Sack for Newborn and Infant 3 Pack Baby Wearable Blanket 0.5 Tog Lightweight Double Zipper Sleep Bag Cyan
FIEMOL$22.824.7★1,293 rev
Wrrernsin Baby Sleep Sack 12-18 Months Baby Wearable Blanket 100% Cotton TOG 0.5 2-Way Zipper Newborn Sleeping Bag 3 Pack Comfy Lightweight Sleep Sacks for Babies
Wrrernsin$22.584.7★659 rev
2-Pack Organic Baby Sleep Sacks 100% Cotton - Soft & Breathable 0.5TOG Baby Wearable Blanket Toddler Sleeping Sack 6-18 Months Easy to Wear Swaddles for Newborns Infants (Glacier M)
KeaBabies$26.064.6★1,007 rev
2-Pack Organic Baby Sleep Sacks 100% Cotton - Soft & Breathable 0.5TOG Baby Wearable Blanket Toddler Sleeping Sack 6-18 Months Easy to Wear Swaddles for Newborns Infants (Butterflies M)
KeaBabies$25.394.6★1,007 rev
Newest
by launch date
CUDDLEBAMBOO Bamboo Viscose 1.0 Tog Sleep Sack 6-12-18 Months Soft Breathable Baby Sleeping Bag Wearable Blanket Baby with 2-Way Zipper Sage
CUDDLEBAMBOO$28.4347 rev
FIEMOL Baby Sleep Sack 12-18 Months 0.5 TOG Wearable Blanket for Baby Boy and Girl 2-Way Zipper Toddler Sleeping Bag 2 Pack Lightweight Sleep Sacks Blue WhaleLarge
FIEMOL$14.41168 rev
Looxii Baby Sleep Sack 0.5 TOG 100% Cotton 3 Pack Wearable Blanket Baby Sleep Bag for Newborn Infant 2-Way Zipper Lightweight Toddler Sleeping Sack 12-18 Months
Looxii$24.69363 rev
Wrrernsin Baby Sleep Sack 12-18 Months Baby Wearable Blanket 100% Cotton TOG 0.5 2-Way Zipper Newborn Sleeping Bag 3 Pack Comfy Lightweight Sleep Sacks for Babies
Wrrernsin$22.58659 rev
FIEMOL Baby Sleep Sack 12-18 Months Long Sleeve Baby Wearable Blanket 0.5 Tog with Mittens 2-Way Zipper Toddler Cotton Sleeping Sack for Boy and Girl Green Dinosaur 2 Pack(Large)
FIEMOL$23.69324 rev
Trending
90-day click momentumCUDDLEBAMBOO Bamboo Viscose 1.0 Tog Sleep Sack 6-12-18 Months Soft Breathable Baby Sleeping Bag Wearable Blanket Baby with 2-Way Zipper Sage
CUDDLEBAMBOO$28.434.6★
2-Pack Baby Sleep Sacks Zipper Wearable Blanket - 100% Organic Cotton 0.5TOG Soft Lightweight Toddler Sleeping Sack 12-24 months Easy to Wear Newborn Swaddles Sleepsack (BumbleBear L)
KeaBabies$26.694.7★
2-Pack Organic Baby Sleep Sacks 100% Cotton - Soft & Breathable 0.5TOG Baby Wearable Blanket Toddler Sleeping Sack 0-6 Months Easy to Wear Swaddles for Newborns Infants (Butterflies S)
KeaBabies$25.724.6★
2-Pack Baby Sleep Sacks Zipper Wearable Blanket - 100% Organic Cotton 0.5TOG Soft Lightweight Toddler Sleeping Sack 12-24 months Easy to Wear Newborn Swaddles Sleepsack (Roarsome L)
KeaBabies$26.604.7★
BubblePanda Rayon Made from Bamboo Sleep Sack 12-18 Months 0.5 Tog Soft Lightweight Toddler Sleep Sack 1t for Babies 2-Way Zipper Wearable Blanket Baby 12 Months
Okayinn$25.954.6★
What buyers say about sleep sacks 12-18 months
What buyers praise and complain about, mined from review topics.What buyers love
“Crazy soft”
“Good purchase comfortable sleep”
“Great quality sleep sack”
“price is reasonable”
“Amazingly soft and comfortable”
“the overall fit feels secure”
“its exactly how it shows in the photo”
“Its a good weight, breathable”
“Great very soft keeping warm enough”
“zipper function is great”
What buyers complain about
“Way too wide”
“Broken Zipper after 3-4ish months”
“Thin fabric”
“cheap materials”
“broken after 2 months”
“Velcro is annoying”
“Buy Quality Not This Trash”
“Im not able to unzip the sleep sack”
“Ill be looking at the more expensive options in hopes for a better product”
“Bought two both couldnt last through one gentle wash cycle without ripping”
Top return reasons
Common questions
- Is sleep sacks 12-18 months profitable to sell on Amazon United States?
- The niche generates $93K/yr across 56 tracked products. 6 of 9 products launched in the last 360 days are still selling. 90-day search growth is +16.4%. Flapen's verdict: Skip it (48/100).
- How competitive is the sleep sacks 12-18 months niche?
- 22 brands and 27 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 71% of demand.
- What do buyers complain about in sleep sacks 12-18 months?
- Top complaints mined from reviews: Size-Overall, Zipper Quality, Thickness. The return rate is 4.1%.
- When does demand for sleep sacks 12-18 months peak?
- Demand peaks in Mar–Apr; the busiest month runs 3.3× the quietest.
- What does it cost to enter the sleep sacks 12-18 months niche?
- Listings span $12.24–$75.79; the average listing price is $28.19 (sweet spot $15–$100). The average incumbent carries 2,329 reviews — the moat a new listing must climb.