10 Best Kids’ Thermals & Long Johns Rated in 2024

Design

The Rocky Ultra Soft Fleece-Lined Thermal for Girls is designed with your child’s comfort in mind. It features an elastic waistband and moisture-wicking microfibers to accommodate growing, active little girls. This set can be worn as a layer beneath outdoor clothing, or used as super plush and warm pajamas on chilly nights.

Materials

The premium-grade fabrics consist of a 92% polyester, 8% spandex mix to provide the ultimate blend of comfort and functionality. The set comes in eight different colors: black, gray, jade, red, royal blue, coral, white, and lavender. These truly are the best of the basics; they aren’t particularly flashy or frilly, but they’re soft, warm, and simple enough to be universal, whatever your child’s style might be. Rocky also sells larger sizes for teens, and a boys’ fit as well (which is largely the same, minus the scalloped neckline, and with the addition of an opening on the pant). This set will be snug without being too tight, so buy close to your usual size if you intend to use them as a base layer, and size up if you’d like a slightly looser fit (like pajamas).

Comfort

This long john set is guaranteed to keep your little one toasty, whether they’re making snowmen outside, or snuggled up with a book at bedtime. Chilly months often result in head colds, and bouts of the flu, so make sure your family is keeping warm this winter with Rocky thermal sets.

Design

As pajamas these are great but they can also defend the cold, freezing climates and bad weather. This thermal set is a good mix of warmth, comfort, moisture protection, and elasticity. The full-cut makes this an exceptionally comfortable fit, plus the size and shape are long-lasting. That is because the material is shrinkage controlled. For one of the best thermal sets on the market, try this great one from Rocky Boy.

Materials

Made of 92% polyester and 8% spandex material, this thermal set is offered is a good selection of colors. It has moisture-wicking, fleece-lined microfibers and an elastic waistband, plus the set stretches for best comfort. Wear this item alone or layer it for very cold weather and protection.

Comfort

The combination of being fleece-lined and moisture-wicking is powerful in keeping kids warm during very cold weather or chilly nights. Fleece is not only very warm but it always soft and comfortable.

Design

This thermal set will retain heat for the best comfort on cold days and night, so kids are the most comfortable. Many colors are offered, so choose a set that will match underwear or outer garments like coats or jackets. This set is perfect for layering or lounging around.

Materials

This waffle thermal from Fruit of the Loom is a fabulous set that is made of 20% cotton and 80% polyester. It has a pull-on closure and itch-free and tag-free comfort. The material stretches with you and is machine washable for easy care. The extra-soft knit set has spandex cuffs and collar and a wicking feature that takes moisture away.

Comfort

The waffle-like material gives this set it wonderful feel that is soft and pulls moisture away from the body. When layering clothes for warmth, this is important to keep down wetness from sweat.

Design

This thermal set has an elastic waistband and tapered legs. Body heat will be contained, and cold air kept out. Kids will remain warm whether they are indoors or outdoors.

Materials

If you are looking for thermals that are not bulky but can be used as a base layer, then this just may be the set for your child. It is made of 60% cotton and 40% polyester and can be used outdoors or indoors for pajamas. They are durable, breathable, and long-lasting, plus the care is very easy. Machine washing is best because the fabrics will not shrink, and the colors will not bleed.

Comfort

A good selection of colors and sizes are offered for boys of various ages. The pants have an elastic waistband and the legs taper for tucking in shoes or boots for best heat retention. This set is stylish and quality-made, and the material feels good on the skin. Even sensitive skin will not be irritated by the fabrics.

Design

Hanes makes this great thermal set for boys in a few color choices that are easy to care for. It is machine washable and does not need special care when traveling, camping, or participating in sports. This set is perfect for layering as the first layer that will be close to the skin.

Materials

It is made of 40% polyester and 60% cotton for a wonderful blend that is warm and comfortable. The material is a waffle-knit, and the ankles and cuffs are created of spandex fabric. Body heat will be retained with these closures. Not only are the seams flat, but these are tagless too. Kids will really enjoy these because of these fabulous comfort features.

Comfort

The waffle-knit products are the best for layering because they will wick moisture away from the skin. Moisture close to the skin will actually make kids cold, so the waffle material will prevent this.

Design

Now your child can trap the heat inside their thermals in style. This top and bottom set comes in a variety of cool colors. Your child can choose between a solid color set such as blue, black, or gray. To enhance their style they can choose a camo set that is available in gray or black. If the exposed waistband isn’t exactly your style, don’t worry. The long sleeve shirt is long enough to cover it while your child is wearing this set. With such affordable prices, your child can own several different pairs. With more than one set in their wardrobe, they can mix and match the sets to create several different stylish combinations. Stock up, winter is coming!

Materials

While the sets are offered in different colors they are all composed of 100% polyester. Parents, you will love how easy it is to clean this set after a day of wintery adventures or several nights of sleeping. All you need to do is throw it in the washer machine and dry it after the washer buzzes. The top of the line stitching and durable material will allow your child to wear this set until they grow out of it.

Comfort

With this set, itchy tags aren’t a thing. Both the shirt and pants are tagless. Polyester is stretchy, thus allowing your child to easily get it on and be comfortable while wearing it. The lightweight feel will have your child forgetting it's even on. While your child might forget they're wearing a thermal set, we can assure it will be doing its job. The material works to keep heat inside, thus your child will be warm and toasty on the coldest days. If they’re wearing this set to play in the snow they can be as active as they want without worrying about sweat. The polyester will wick away moisture, thus keeping your little one warm and dry.

Design

As with the other thermal sets, you will receive a long-sleeved top and pants for your child to wear. Children of all ages can wear a set from 32 Degrees as they provide sets in small, medium, large, and extra-large sizes. The stretch fit makes it easy for children to slide on their thermals by themselves. The sleek design and different color options give your child the freedom to wear these under clothes or by themselves.

Materials

Both the top and bottom are composed of 49% acrylic, 49% polyester, and 2% spandex. The materials come together to form a set that is anti-static, anti-odor, and machine wash safe. Not only will the set survive countless washes but it also dries quickly.

Comfort

The entire set is lightweight thus allowing your child to feel comfortable while wearing it. The elastic waistband makes the pants easy to put on and provides a pleasant fit. Furthermore, it will help keep cold air from sneaking in. The crew cut neck rides low enough to not cause any discomfort around your child’s neck but high enough to keep your child’s upper body warm.

Design

Moisture is wicked away by the waffle material that makes up this set of thermals. The company states that only solid colors have this feature. It is very necessary when layering for the outdoors. Not as many choices of thermals are available for girls but sets like this one are made just for them. The sizes and colors are made especially for girls’ tastes and body shapes.

Materials

This set is made of 20% cotton and 80% polyester with a pull-on closure. The fabric is a waffle material which is warm and retains heat well. The cuffs and collar are made of spandex, plus the thermal material moves with you for all activities. This set is easy to care for and machine washable.

Comfort

The pull-on design eliminates any discomfort caused by buttons, ties, or zippers. This thermal set keeps your child warm by wicking away any moisture, thus your child can be warm without being sweaty. The spandex collar and cuffs easily stretch to your child’s body and will not leave them feeling as if it is too tight. The use of cotton and polyester will provide your child with a superior sense of comfort as both materials are soft.

Design

Sometimes girls prefer the thermal products offered to boys because of the larger sizes and the fabulous colors, but this product for girls from Hanes has excellent colors they will love. The colors offered are perfect for girls. They can choose from pretty pastels or bright, bold colors that only girls will love. These can be worn as pajamas indoors or outdoors as a thin layer in mild weather.

Materials

This set is made of 40% polyester and 60% cotton fabric and is machine-washable. The seams are flat and will not rub on the skin. Even those with sensitive skin will appreciate this feature. The material will not shrink, and the seams are double-stitched for durability and wearing longevity.

Comfort

Say goodbye to itchy seams. With flat seams and a cotton-poly blend, your child will be nothing but comfortable in this thermal set. The rib-knit cuffs will keep cold air from entering without making your child feel constricted. The waffle material is soft and provides a gentle feel on your child’s skin.

Design

City Threads touts that not only is it a celebrity-endorsed company (the children of stars such as Christina Aguilera, Ashlee Simpson Wentz, Sandra Bullock, Heidi Klum, and Liev Schrieber all wear this brand), but it’s a company dedicated to helping local economies by manufacturing its products in the USA. This thermal union suit is breathable but warm, soft, and safe for sensitive skins. It is available in fifteen different colors and designed to be unisex, so anyone can enjoy it.

Materials

Made with no harsh chemicals or dyes, little ones can wear this without parents fretting over irritants. It’s made of a cotton and polyester blend and is flexible with a slight stretch. City Threads knows that your kids will want to wear their clothes over and over, so they use high-quality fabrics to ensure longevity and durability. Whether your little one wants to wear their thermal around the house, or as a base layer beneath their outdoor outfits, this City Threads suit could be just right for your family.

Comfort

This one-piece is bound to keep little one nice and cozy. And since it’s a jumpsuit, there’s no way for it to ride up and expose little bellies to the cold air. We know how easy it is to catch that pesky cold, so keep warm this winter!