UPGRADE
Perfect for those
tricky in-between seasons
The same butter cotton,
now lighter and more comfortable
Check out our
new and improved sizes!
Select your child's size based on their height.
Every child grows at a different pace,
so we've improved our sizing to make things easier for you.
| Old | New |
|---|---|
| Based on Age | Based on Height |
| 3M, 6M, 18M, 24M 1-2Y, 2-3Y, 3-4Y, 5-6Y |
60, 70, 80, 90, 100, 110, 120, 130 |
All our sizes are now a bit roomier.
Achieve the perfect fit every time,
simply by purchasing the correct size for your child's height.
Don't forget to check our new size guide
and each product's actual measurements before purchase.
Buttery smooth fabric
for all-day comfort
Butter Cotton Sweatsuit Set
Our products are made
with real parents in mind.
-
It's not easy putting together a look for kindergarten or daycare every morning.
-
An all-in-one sweatsuit set will be convenient for parents and comfy for kids.
-
Let's use our butter-wash technique to create a luxuriously soft fabric.
-
It'll feel so nice against the skin, children everywhere will be able to move and play freely.
“My child is sensitive
to fabric,
but this feels just right.”
-
You can't beat Konny
when it comes to fabric.
This is the perfect everyday outfit! -
I bought this in two different colors.
I can mix and match the pieces
with other items too! -
It's not easy getting sweatshirts over my toddler's head,
but the neck snaps made it really easy.
The color is fantastic too!
- Actual reviews from real customers.
Thoughtfully designed
with parents in mind.
A relaxed fit
for easy movement
Our signature cute
penguin logo
Luxuriously soft
inside and out
Wrist and ankle bands
for gentle support
-
Top
Neck Snaps
Sizes 8-90 have snaps for added convenience.
-
Bottoms
Adjustable Drawstrings
Simply pull on the drawstrings to adjust the size as needed.
-
Tyvek Label
The soft label won't irritate skin.
-
Protective Fabric Layer
We've added a soft layer of fabric to the embroidery to minimize skin irritation.
- Once the stitching softens after multiple washes and consistent wear, the protective layer will naturally fall away.
Perfect for those
Soft as Butter
Our signature butter-wash process transforms
durable cotton inside and out,
maximizing softness.
-
Breathable -
Soft -
Durability
-
Feel
- Luxuriously soft and smooth to the touch.
- Can be worn on bare skin without irritation.
-
Fit
- Lightweight enough to facilitate easy movement.
-
Care
- The durable material retains its quality, even after frequent washes.
- What’s Butter-Wash?
- A premium finishing process using the German company WACKER’s high-concentration microemulsion, designed to boost the fabric's softness and flexibility.
Demand only the best
for your child.
-
Domestic and
international
safety tests complete -
All materials
non-fluorescent
The Konny Way
We put 100% into
everything we make
From fabric development to fit,
craftsmanship, and storage,
we never compromise on quality.
Every detail is designed from
a parent’s perspective.
Made for everyday reach
Our products are functional,
aesthetic and effortless
—so you naturally reach for them,
again and again.
We grow with you
Everything we do is guided by your needs.
We’re proud to help make
everyday life a little easier.
Konny stands with parents and
caretakers everywhere.
Colors
Butter Yellow
-
Heather Grey
-
Blue
-
Mint
-
Pink Lavender
-
Peach
- These colors most closely match the actual product.
Size Guide
Standard Guide
| Size | Height | Weight | Age |
|---|---|---|---|
| 60 | 50-60 cm (19.7-23.6 in) |
4-6 kg (8.8-13.2 lb) |
0-3M |
| 70 | 60-70 cm (23.6-27.6 in) |
6-9 kg (13.2-19.8 lb) |
3-9M |
| 80 | 70-80 cm (27.6-31.5 in) |
9-11 kg (19.8-24.3 lb) |
9-18M |
| 90 | 80-90 cm (31.5-35.4 in) |
11-13 kg (24.3-28.7 lb) |
18-30M |
| 100 | 90-100 cm (35.4-39.4 in) |
13-16 kg (28.7–35.3 lb) |
30M-4Y |
| 110 | 100-110 cm (39.4-43.3 in) |
16-19 kg (35.3–41.9 lb) |
4-5Y |
| 120 | 110-120 cm (43.3-47.2 in) |
19-23kg (41.9-50.7 lb) |
5-6Y |
| 130 | 120-130 cm (47.2-51.2 in) |
23-27 kg (50.7-59.5 lb) |
6-7Y |
Actual Measurements
| Size (cm/in) |
80 | 90 | 100 | 110 | 120 | 130 |
|---|---|---|---|---|---|---|
| Full Length A |
36.2 /14.3 |
39.3 /15.5 |
42.4 /16.7 |
45.5 /17.9 |
48.6 /19.1 |
51.7 /20.4 |
| Half Chest B |
34.5 /13.6 |
36.8 /14.5 |
39 /15.4 |
41.3 /16.3 |
43.5 /17.1 |
45.8 /18 |
| Sleeve Length C |
19.7 /7.8 |
23.3 /9.2 |
26.9 /10.6 |
30.5 /12 |
34.1 /13.4 |
37.7 /14.8 |
| Size (cm/in) |
80 | 90 | 100 | 110 | 120 | 130 |
|---|---|---|---|---|---|---|
| Full Length A |
42 /16.5 |
48.5 /19.1 |
55 /21.7 |
61.5 /24.2 |
68 /26.8 |
74.5 /29.3 |
| Waist B | 20.6 /8.1 |
21.8 /8.6 |
23 /9.1 |
24.2 /9.5 |
25.4 /10 |
26.6 /10.5 |
| Hip Width C |
32.5 /12.8 |
34.5 /13.6 |
36.5 /14.4 |
38.5 /15.2 |
40.5 /15.9 |
42.5 /16.7 |
| Bottom Opening D |
8 /3.1 |
8.5 /3.3 |
9 /3.5 |
9.6 /3.8 |
10.2 /4 |
10.8 /4.3 |
| Front Rise E |
19 /7.5 |
19.5 /7.7 |
20 /7.9 |
21 /8.3 |
22 /8.7 |
23 /9.1 |
- Above are the actual measurements of the product.
- A difference of 1-2cm can occur depending on how the product is measured, even within the same size.
Models' Sizes
-
Wearing 90
92 cm/13 kg
(36.2 in/28.7 lb) -
Wearing 100
95 cm/14 kg
(37.4 in/30.9 lb) -
Wearing 100
95 cm/15 kg
(37.4 in/33.1 lb) -
Wearing 100
95 cm/15 kg
(37.4 in/33.1 lb) -
Wearing 110
105 cm/17 kg
(41.3 in/37.5 lb) -
Wearing 110
107.5 cm/17 kg
(42.3 in/37.5 lb)
Care Instructions
Materials:
[Outer Fabric] 69% cotton, 31% polyester
[Rib] 95% Cotton, 5% spandex
[Pocket Lining] 100% cotton
Care Instructions
-
Machine wash
warm -
Tumble dry
low heat -
Do not
iron -
Do not
dry clean -
Do not
bleach
Check Before Purchase
Due to the nature of the cotton fabric, the Heather Grey color may show small black dots on the surface. This is not a defect, and returns or exchanges for this reason will not be accepted.
Packaging and Shipping
In order to ensure you receive the highest quality product possible, we package all our orders with a Micro-Pak® PE sheet, a functional antibacterial and moisture-proof packing material that has passed U.S. and European safety standards.
Butter Cotton Sweatsuit Set
Clothing Size Guide
Extra 5% off your first order
Subscribe & Save
$5 off on orders $80+
$10 off on orders $150+
Check out our
new and improved sizes!
Select your child's size based on their height.
Every child grows at a different pace,
so we've improved our sizing to make things easier for you.
| Old | New |
|---|---|
| Based on Age | Based on Height |
| 3M, 6M, 18M, 24M 1-2Y, 2-3Y, 3-4Y, 5-6Y |
60, 70, 80, 90, 100, 110, 120, 130 |
All our sizes are now a bit roomier.
Achieve the perfect fit every time,
simply by purchasing the correct size for your child's height.
Don't forget to check our new size guide
and each product's actual measurements before purchase.
Buttery smooth fabric
for all-day comfort
Butter Cotton Sweatsuit Set
Our products are made
with real parents in mind.
-
It's not easy putting together a look for kindergarten or daycare every morning.
-
An all-in-one sweatsuit set will be convenient for parents and comfy for kids.
-
Let's use our butter-wash technique to create a luxuriously soft fabric.
-
It'll feel so nice against the skin, children everywhere will be able to move and play freely.
“My child is sensitive
to fabric,
but this feels just right.”
-
You can't beat Konny
when it comes to fabric.
This is the perfect everyday outfit! -
I bought this in two different colors.
I can mix and match the pieces
with other items too! -
It's not easy getting sweatshirts over my toddler's head,
but the neck snaps made it really easy.
The color is fantastic too!
- Actual reviews from real customers.
Thoughtfully designed
with parents in mind.
A relaxed fit
for easy movement
Our signature cute
penguin logo
Luxuriously soft
inside and out
Wrist and ankle bands
for gentle support
-
Top
Neck Snaps
Sizes 8-90 have snaps for added convenience.
-
Bottoms
Adjustable Drawstrings
Simply pull on the drawstrings to adjust the size as needed.
-
Tyvek Label
The soft label won't irritate skin.
-
Protective Fabric Layer
We've added a soft layer of fabric to the embroidery to minimize skin irritation.
- Once the stitching softens after multiple washes and consistent wear, the protective layer will naturally fall away.
UPGRADE
Perfect for those
tricky in-between seasons
The same butter cotton,
now lighter and more comfortable
Soft as Butter
Our signature butter-wash process transforms
durable cotton inside and out,
maximizing softness.
-
Breathable -
Soft -
Durability
-
Feel
- Luxuriously soft and smooth to the touch.
- Can be worn on bare skin without irritation.
-
Fit
- Lightweight enough to facilitate easy movement.
-
Care
- The durable material retains its quality, even after frequent washes.
- What’s Butter-Wash?
- A premium finishing process using the German company WACKER’s high-concentration microemulsion, designed to boost the fabric's softness and flexibility.
Demand only the best
for your child.
-
Domestic and
international
safety tests complete -
All materials
non-fluorescent
The Konny Way
We put 100% into
everything we make
From fabric development to fit,
craftsmanship, and storage,
we never compromise on quality.
Every detail is designed from
a parent’s perspective.
Made for everyday reach
Our products are functional,
aesthetic and effortless
—so you naturally reach for them,
again and again.
We grow with you
Everything we do is guided by your needs.
We’re proud to help make
everyday life a little easier.
Konny stands with parents and
caretakers everywhere.
Colors
Butter Yellow
-
Heather Grey
-
Blue
-
Mint
-
Pink Lavender
-
Peach
- These colors most closely match the actual product.
Size Guide
Standard Guide
| Size | Height | Weight | Age |
|---|---|---|---|
| 60 | 50-60 cm (19.7-23.6 in) |
4-6 kg (8.8-13.2 lb) |
0-3M |
| 70 | 60-70 cm (23.6-27.6 in) |
6-9 kg (13.2-19.8 lb) |
3-9M |
| 80 | 70-80 cm (27.6-31.5 in) |
9-11 kg (19.8-24.3 lb) |
9-18M |
| 90 | 80-90 cm (31.5-35.4 in) |
11-13 kg (24.3-28.7 lb) |
18-30M |
| 100 | 90-100 cm (35.4-39.4 in) |
13-16 kg (28.7–35.3 lb) |
30M-4Y |
| 110 | 100-110 cm (39.4-43.3 in) |
16-19 kg (35.3–41.9 lb) |
4-5Y |
| 120 | 110-120 cm (43.3-47.2 in) |
19-23kg (41.9-50.7 lb) |
5-6Y |
| 130 | 120-130 cm (47.2-51.2 in) |
23-27 kg (50.7-59.5 lb) |
6-7Y |
Actual Measurements
| Size (cm/in) |
80 | 90 | 100 | 110 | 120 | 130 |
|---|---|---|---|---|---|---|
| Full Length A |
36.2 /14.3 |
39.3 /15.5 |
42.4 /16.7 |
45.5 /17.9 |
48.6 /19.1 |
51.7 /20.4 |
| Half Chest B |
34.5 /13.6 |
36.8 /14.5 |
39 /15.4 |
41.3 /16.3 |
43.5 /17.1 |
45.8 /18 |
| Sleeve Length C |
19.7 /7.8 |
23.3 /9.2 |
26.9 /10.6 |
30.5 /12 |
34.1 /13.4 |
37.7 /14.8 |
| Size (cm/in) |
80 | 90 | 100 | 110 | 120 | 130 |
|---|---|---|---|---|---|---|
| Full Length A |
42 /16.5 |
48.5 /19.1 |
55 /21.7 |
61.5 /24.2 |
68 /26.8 |
74.5 /29.3 |
| Waist B | 20.6 /8.1 |
21.8 /8.6 |
23 /9.1 |
24.2 /9.5 |
25.4 /10 |
26.6 /10.5 |
| Hip Width C |
32.5 /12.8 |
34.5 /13.6 |
36.5 /14.4 |
38.5 /15.2 |
40.5 /15.9 |
42.5 /16.7 |
| Bottom Opening D |
8 /3.1 |
8.5 /3.3 |
9 /3.5 |
9.6 /3.8 |
10.2 /4 |
10.8 /4.3 |
| Front Rise E |
19 /7.5 |
19.5 /7.7 |
20 /7.9 |
21 /8.3 |
22 /8.7 |
23 /9.1 |
- Above are the actual measurements of the product.
- A difference of 1-2cm can occur depending on how the product is measured, even within the same size.
Models' Sizes
-
Wearing 90
92 cm/13 kg
(36.2 in/28.7 lb) -
Wearing 100
95 cm/14 kg
(37.4 in/30.9 lb) -
Wearing 100
95 cm/15 kg
(37.4 in/33.1 lb) -
Wearing 100
95 cm/15 kg
(37.4 in/33.1 lb) -
Wearing 110
105 cm/17 kg
(41.3 in/37.5 lb) -
Wearing 110
107.5 cm/17 kg
(42.3 in/37.5 lb)
Care Instructions
Materials:
[Outer Fabric] 69% cotton, 31% polyester
[Rib] 95% Cotton, 5% spandex
[Pocket Lining] 100% cotton
Care Instructions
-
Machine wash
warm -
Tumble dry
low heat -
Do not
iron -
Do not
dry clean -
Do not
bleach
Check Before Purchase
Due to the nature of the cotton fabric, the Heather Grey color may show small black dots on the surface. This is not a defect, and returns or exchanges for this reason will not be accepted.
Packaging and Shipping
In order to ensure you receive the highest quality product possible, we package all our orders with a Micro-Pak® PE sheet, a functional antibacterial and moisture-proof packing material that has passed U.S. and European safety standards.
Customer Reviews
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
H
These active clothes sets have been my go-to ones since last year. I got just one last year and I regret not getting more. So I got every color this year! I cannot think about what I should wear to my kids today and just pick these clothes. The suitable colors for Fall are always good as Konny always does, and convenient outfits for active boys. I so love it.
It's wonderful that you decided to get every color this year—what a great choice! Your lovely comment on your experience with our product would be a great help to other customers!!
D
This sweatsuit looks simple, but the quality is exceptional. The butter cotton fabric is unbelievably smooth, soft, and gentle — perfect for sensitive toddler skin. My daughter stays comfortable in this all day, whether she’s playing, walking around, or relaxing at home.
The color is beautiful and easy to mix and match with other Konny pieces. We’ve gotten so many compliments from other parents whenever she wears this, and I always recommend Konny when they ask where it’s from. The fabric holds up really well after washing and still feels premium.
We’ve been longtime Konny fans (including their bibs), and I’ve even bought Konny outfits as gifts for friends. Still hoping they release adult sizes someday.
Dear valued customer,
Thank you for taking the time to leave such a lovely review for our [25FW] Butter Cotton Sweatsuit Set. We are thrilled to hear that your daughter stays comfortable all day in our butter cotton fabric and that you have received compliments from other parents. We take pride in our high-quality materials and are happy to hear that they have held up well after washing. We appreciate your support!
S
Very soft and warm. Wish the waist band was a bit less tight though. But overall happy and have gifted these to others!
Hi there,
Thank you for taking the time to leave a review for our [25FW] Butter Cotton Sweatsuit Set. We're so glad to hear that you found our set soft and warm! We appreciate your feedback about the waistband and will definitely take it into consideration for future improvements. We're also happy to hear that you've gifted our set to others – thank you for spreading the love! We hope to see you again soon.
E
It is so comfy and easy to style with her other daily outfits separately.
Thank you for your kind words! We're so happy to hear that your daughter loves our Butter Cotton Sweatsuit Set. Our goal is to provide comfortable and versatile pieces that can be easily styled with any outfit. We're glad to know that it has been a great addition to her daily wardrobe. Thank you for choosing our product!
D
Konny offers great quality product at a reasonable price. I purchased two sets while they were having a promotion so it was definitely a great purchsae! My baby is 14 months (76in & 21 lbs) and I ordered 3-4 Y. These are larger than Konny's loungewear so I suggest getting the product based on their size chart.
Thank you for your kind review! Your lovely comment on your experience with our product would be a great help to other customers❤️
J
I got the blue top and pants for our Europe trip and it was perfect! I love the simple, baby blue color and the quality is thick and soft! Highly recommend. I want to order one in every color now. Thank you for making cute clothes for boys that don't have dinosaurs or cars all over it!
Thank you so much for your support and we can't wait for you to try out more of our products❤️ Have a great day! :)