Is sleepover party supplies for girls profitable to sell on Amazon United States?

The niche generates $627K/yr across 118 tracked products. 16 of 38 products launched in the last 360 days are still selling. 90-day search growth is -16.1%. Flapen's verdict: Worth a look (59/100).

How competitive is the sleepover party supplies for girls niche?

83 brands and 128 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 42% of demand.

What do buyers complain about in sleepover party supplies for girls?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 2.1%.

When does demand for sleepover party supplies for girls peak?

Demand is steady year-round — the busiest month runs 1.8× the quietest.

What does it cost to enter the sleepover party supplies for girls niche?

Listings span $5.75–$68.93; the average listing price is $26.16 (sweet spot $15–$100). The average incumbent carries 1,622 reviews — the moat a new listing must climb.

sleepover party supplies for girls

Worth a look

Shows a fragmented shelf (top 5 take 18% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Competition

Incredible18%

top-5 click share — an open shelf

Avg price

Incredible$26.16

avg listing price — sweet spot $15–$100

Brand share

Great42%

top-5 brand share — no brand owns this niche

Price range

Great$5.75–$68.93

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Good2.1%

return rate — above 5% kills the launch gate

Market size

Good$627K

$627K/yr · 1.8M searches

Review moat

Okay1,622.01

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-16.1%

90-day search growth — must beat 0% to launch

Conversion

Bad1.3%

search→purchase rate — share of searches ending in a sale

According to Flapen's Amazon United States niche tracking, sleepover party supplies for girls is a $627K/yr Amazon United States market (1.8M searches/yr). The top 5 brands hold 42% of demand. Verdict: Worth a look — 59/100.

Data updated Jul 16, 2026 · scored weekly · How we score niches

sleepover party supplies for girls market data

Units sold / yr: 30K–40K; avg 250–500/product
Revenue / yr: $785K–$1.0M; units × avg price
Conversion rate: 1.3%
Avg BSR: #908
Page quality: 0%
Prime: 100%
Sponsored: 97%
Out of stock: 1.9%
Avg brand age: 32 months
Avg seller age: 148 days

Competition & brand share

Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.

Brands

83 falling

Sellers

128

Top-5 brand share

42%

Top 20: 69%

Top-5 click share

18%

Top 20: 49%

Open market

55%

Sintuff24%
KONEUK7%
LINEMIN4%
Fanfanwin3%
Guifizeiom3%
xo, Fetti3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -16.1% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.8×

Open Trend

Top sleepover party supplies for girls search terms

sleepover party supplies for girls358K/yr -15.5%1.6% conv.
spa party supplies for girls220K/yr -27.7%1.5% conv.
sleepover148K/yr +29.3%0.1% conv.
slumber party supplies for girls176K/yr -22.3%1.5% conv.
sleepover stuff114K/yr -4.0%0.2% conv.
sleep over party supplies for girls87K/yr -16.3%0.8% conv.
spa party90K/yr -28.4%1.1% conv.
spa party favors81K/yr -22.6%1.0% conv.
spa birthday party supplies for girls80K/yr -32.9%1.2% conv.
slumber party56K/yr +2.2%0.7% conv.

All search terms

Top sleepover party supplies for girls 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.

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

LINEMIN Womens Fuzzy Socks Cozy Fluffy Winter Warm Slipper Socks Microfiber Soft Home Sleeping Socks (5 Pack Soild Color B)

LINEMIN$9.744.6★3,829 rev

Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 8 Pink)

Sintuff$50.404.7★522 rev

Sintuff 24 Pcs Sleepover Party Supplies for Girls 6 Spa Robes for Girls Slumber Party 6 Tote Bags 6 Headbands 6 Spa Masks(Size 12 Multicolor)

Sintuff$52.914.6★497 rev

Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 10 Purple)

Sintuff$50.994.7★522 rev

Guifizeiom Spa Party Supplies for Girls 6 Satin Robes Kids Spa Birthday Sleepover Supplies Kit(5 Rose 1 Pink)

Guifizeiom$59.454.4★58 rev

Newest

by launch date

Nyxuso Spa Party Supplies for Girls Spa Robes for Kids Party Supplies Birthday Sleepover Favors (Pink Size 8)

Nyxuso$52.746 rev

5mo ago

100 PCS Spa Party Supplies for Girls Spa Party Favors Include Face Masks Skincare Hand Cream Lip Balm Under Eye Patches Lip Mask and Foot Bath Bombs Spa Birthday Sleepover Party Supplies

HHXI$25.09105 rev

8mo ago

110PCS Spa Party Supplies for Girls Spa Day Kit Include Face Masks Skincare Hand Cream Lip Balm Under Eye Patches Mini Hair Brush Birthday Sleepover Party Supplies for Teen Girls Spa Gifts

VESPRO$31.09114 rev

11mo ago

60PCS Spa Party Supplies for Girls Include Face Masks Hand Cream Lip Balm Foot Bath Bombs Lip Mask Under Eye Patches Compressed Towels Spa Birthday and Sleepover Party Supplies for Girls Women

KONEUK$22.13248 rev

1y ago

80PCS Spa Party Supplies for Girls Include Facial Masks Lip Balm Hand Cream Under Eye Patches Lip Mask Foot Bath Bombs Compressed Towels Sleepover and Spa Birthday Party Supplies for Girls

KONEUK$25.39118 rev

1y ago

What buyers say about sleepover party supplies for girls

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall15%

“It is a great quality set”

Gifting Purpose12%

“It was a gift”

Value For Money12%

“Amazing value”

Fun/Entertainment Experience6%

“Great Fun”

Soft Feel6%

“SUPER SOFT”

Color5%

“Beautiful Colors”

Smell5%

“Great Smell”

Comfort-Overall4%

“Very comfortable”

Ease Of Use4%

“Easy to use”

Advertised Vs Actual Product3%

“As described”

What buyers complain about

Size-Overall13%

“runs a bit big”

Quality-Overall12%

“Very low quality product”

Durability8%

“Completely fell apart”

Adhesion/Stickiness4%

“Does not stick well”

Thickness3%

“These socks arent too thick”

Advertised Vs Actual Product3%

“Misleading description”

Strength3%

“very fragile”

Allergies2%

“they irritated my skin a little”

Value For Money2%

“not worth price”

Heating2%

“not hot enough”

Top return reasons

Size-Overall29%

Color10%

Value For Money10%

Advertised Vs Actual Product7%

Quality-Overall6%

Defective Material/Parts4%

Functionality-Overall4%

Material Quality3%

Brightness/Shine/Glow3%