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.

*We've added a new 130 size.
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
  • 100% Cotton
  • 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.

We put 100% into everything we make

Made for everyday reach

Our products are functional,
aesthetic and effortless
—so you naturally reach for them,
again and again.

Made for everyday reach

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.

We grow with you

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.

SAVE MORE

Butter Cotton Sweatsuit Set

Regular price US$43.00
Unit price
per 
View Size Guide
ADD TO BABYLIST

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.

*We've added a new 130 size.
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
  • 100% Cotton
  • 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.

We put 100% into everything we make

Made for everyday reach

Our products are functional,
aesthetic and effortless
—so you naturally reach for them,
again and again.

Made for everyday reach

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.

We grow with you

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.

Reviews