Memorial Day Sale: Save 30% on all swimwear from now until 5/27.

Rash Guards, One-Pieces, Bikinis, Sunhats, & More. Use REIMASWIM30 at checkout.
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Toddler Thermal Underwear & Long Johns

The key to a great day out is a solid foundation. Our toddler base layers are made from soft wool blends and high-tech lightweight material. They’re super-soft and have flat seams to keep toddlers warm and dry while exploring the outdoors. Pair your toddler’s thermal underwear with a soft fleece jacket in mild weather and a warm winter coat when the temperature drops. 

Shop our range of toddlers’ thermal underwear to find the ideal base for your toddlers’ outfit.

-20%
3-4 Y / 5-6 Y / 7-8 Y / 11-12 Y / 4-5 Y
Juniors' base-layer set Lighten
Juniors' base-layer set Lighten
$39.95 Regular price $49.95 Sale price

Durability and Comfort Set us Apart

  • Our toddler long johns are warm, soft and made from a durable anti-pilling material to keep them looking great for longer
  • High-tech materials like Thermolite® maintain their insulation properties even when they’re wet—just right for days out making snow angels
  • Our clothes are designed to be lovingly passed down to the next member of the family—that’s why they’re made to last!

One-Piece Toddlers’ Thermals 

Our versatile thermals for toddlers will start off your little one’s daily adventure right. They bring together the heat-retaining and durability properties of Merino wool with high-performance fabrics like Tencel® and Thermolite®. 

Fleece thermal overalls are an ideal option for toddlers, with long zippers for easy diaper changes. And for extra cold days, find double-layered toddlers’ thermal underwear. 

Reima's Green Promise 

We care about the environment and know you do too. That’s why we don’t use harmful chemicals like fluorocarbons in our clothes, resulting in safer products for your children. What’s more, our high-quality products are made to last, meaning a beloved item can be passed down from one child to the next.