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American Trends

Thermal Underwear for Kids Toddler Winter Base Layer Long Johns Sets for Girls Boys

$15.99$23.99
size6

1603+ bought in the past month

Key details

department
boys
date_first_available
February 21, 2023
product_warranty
For warranty information about this product, please click here
best_sellers_rank
#14,953 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #2 in Boys' Thermal Underwear Sets

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Customer reviews

1,239 reviewsPositive

Rated 4.6/5 across 1,239 reviews — highly regarded by customers.

  • 100% of sampled reviews are from verified purchases.
  • 88% of sampled reviews give 4–5 stars.

Customers say

Customers find the thermal underwear effective at keeping warm in winter, particularly under snow clothes, and appreciate its softness, quality, and comfort.

Generated from the text of customer reviews

★★★★★

High-Quality, Warm & Perfect for Active Toddlers in Cold Weather

I purchased these thermal underclothes for my toddlers, and they’ve been a total game changer this winter. The material is thick, soft, and really high quality — warm enough to handle cold weather, but still lightweight and stretchy so my kids stay comfortable while playing and moving around. As a stay-at-home mom who’s constantly on the go, I really appreciate how dependable these are. It’s been harder getting out in the colder months because I don’t want the kids freezing, but since buying these, they’ve handled the weather so much better. The fabric has great elasticity and fits snugly without feeling tight or restrictive. I love that it absorbs moisture and wicks sweat, especially when my toddlers are running around or bundled up for a long time. The design is simple and works under any outfit, and the round neck and stretchy cuffs help everything stay in place without rolling up or sagging. Even after multiple washes, the set keeps its shape — no stretching, shrinking, or losing warmth. They feel durable and well-made, which is exactly what I need for daily wear during winter. These thermals are perfect as a base layer for school days, outdoor play, stroller walks, or any cold-weather activity. If you want reliable, warm, and comfy winter wear for toddlers, this set is definitely worth it. Read more

B.NicoleVerified purchase
★★★★★

Worth it

This was perfect for my toddler to wear under her soccer uniform. It had extra room so I'm not worried about shrinking and it's a lot thinker than the typical legging material. It's warm and soft on the inside as well. Read more

C. C.Verified purchase
★★★★★

Perfect for layering in cold weather

Ordered these for my daughter to wear under her snow suit. They are perfect. Very soft, and comfortable. Fit true to size. Read more

NikkiVerified purchase
★★★★★

Perfect for layering

So soft and warm!! My toddler is 36 inches tall and 2T fits nice and close for layering over. Material is surprising soft and stretchy Read more

Karla HoffordVerified purchase
★★★★

Warm but sizing is off

The sizing on these are a bit off - the waist runs big but they’re too short and overall kinda snug. But they are so soft and warm, and my toddler loves wearing them. Read more

AnnaVerified purchase
★★★★★

Excellent

Soft, comfy and warm! Read more

Mallory BateVerified purchase
★★★★★

Fantastic kids thermal set

I recently purchased my kids this thermal set, and I couldn’t be happier with the quality and performance. The fabric is soft, stretchy, and super comfortable—perfect for keeping little ones warm during chilly weather. It provides excellent insulation without feeling bulky, so my child can move around freely, whether playing outside or wearing it under winter clothes. What impressed me most is how well it retains heat while remaining breathable. Even after a full day of outdoor fun, my child stays cozy without overheating. The fit is true to size, and the material is durable enough to handle multiple washes without losing its shape or softness. Overall, this thermal set is a must-have for winter! It’s practical, well-made, and ensures kids stay warm and comfortable all day long. Highly recommend for any parent looking to keep their little ones snug during the colder months! Read more

Ana MariaVerified purchase
★★★★★

Love them!

Great quality base layer ,very warm but not bulky at all. The fabric feels nice and well made. Definitely a 5-star item. Read more

selinaVerified purchase
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