A soft cotton layer for cool mornings and colder days

When the weather turns, kids need layers that feel good enough to wear all day. This kids base layer set pairs a long-sleeve top with matching pants, both in soft, breathable knit cotton. Wear it under a sweater and jeans for school, under snow pants for playtime, or on its own as a cozy set around the house.

The fabric is 100% cotton, knit for a smooth feel against the skin, and the simple solid colors make it easy to mix, match and layer. There are no loud prints, no scratchy extras and nothing complicated. It is the quiet basic that makes the rest of the outfit feel better.

Why a base layer set helps

• Layering: a thin cotton layer under sweaters and jackets lets you add or remove clothing as the day changes.
• Soft cotton knit: 100% cotton for a gentle, breathable feel against the skin.
• Two pieces, one set: a long-sleeve top and matching pants, ready to wear together.
• Easy colors: blue, pink and yellow solids that work with almost anything.
• Wide size range: 110, 120, 130, 140, 150 and 160 sizes for growing kids.

Easy ways to wear it

• Under school clothes on cool mornings, with a sweater or hoodie on top.
• Under snow pants, jackets and ski layers for outdoor play (it is a layer, not a warmth rating, so dress for the weather).
• At home as a cozy lounge set on weekends.
• In the suitcase as a lightweight packing layer for autumn and winter trips.
• As a first layer for sports practice on cooler days.

How to choose the size

Sizes are listed by height in centimeters: 110, 120, 130, 140, 150 and 160. Compare your child's height and chest to the size chart on this page. Because a base layer is worn under other clothes, many parents choose the size that fits comfortably rather than tightly. If your child is between sizes, consider sizing up for room to grow.

Product details

Specifications reflect the supplier listing. Please check the size chart and the variant selector for exact options.

Underwear layer, not sleepwear

This set is sold as a base layer. It is not sold or labeled as children's sleepwear. If you would like pajamas for your child, please look for items labeled as sleepwear that meet US flammability rules.

Care instructions

• Machine wash in cool or warm water with similar colors.
• Wash dark and bright shades separately for the first few washes.
• Tumble dry on low or hang dry to help limit shrinkage in cotton.
• Avoid bleach, which can weaken cotton and fade colors.
• Always follow the care label attached to the garment.

Common questions

What is included in each set?

Each set includes one long-sleeve top and one pair of matching pants.

Is it warm enough for winter?

It is a soft cotton layer made for wearing under other clothes. Warmth depends on what you wear over it and on the weather, so dress your child for the conditions.

What sizes does it come in?

Sizes 110, 120, 130, 140, 150 and 160, listed by height in centimeters. Please check the size chart.

Is the fabric all cotton?

The supplier lists the fabric as 100% cotton knit. Please check the label on your set for the fiber content and care details.

Can my child sleep in it?

This set is sold as a base layer, not as sleepwear. Children's sleepwear has separate US flammability requirements, so we do not market this item for sleeping.

Does cotton shrink?

Cotton can shrink slightly, especially with high heat. Wash cool or warm and dry on low or hang dry.

Is it unisex?

Yes. The solid colors and simple cut work for boys and girls.

Layer up with an easy basic

Choose a size and color, and add a soft cotton base layer set to your cart. A comfortable first layer makes cool days easier for kids and for you.