Merino Wool Underlayer (bottom) Simply Merino Clothing Co– Simply Merino USA
![](https://www.simplymerino.com/cdn/shop/products/thermal-underlayer-bottom-children-up-to-age-12-simply-merino-clothing-co-2t-soft-rust-920029_683x1024.jpg?v=1693258975)
Simply Merino thermal bottoms work great as a thin layer under all of your kids sporting gear. The fabric breathes, and wicks moisture away from the body.
Fit is true to size, but we always recommend sizing up for longer wear.
*Our thermal bottoms have straighter and longer legs making them a tighter fit than our PJ bottoms.
NOTE: Price is for pants only - the top is sold separately so you can mix and match colours and sizes.
![](https://www.simplymerino.com/cdn/shop/files/thermal-underlayer-bottom-children-up-to-age-12-simply-merino-clothing-co-2t-rouge-597416_683x1024.jpg?v=1705456918)
Merino Wool Underlayer (bottom)
![](https://tracksmith-media.imgix.net/Mens-Fall_0003_Layer-Comp-4_e3a14e4b-c258-4432-8503-e7413b5aea42.png?auto=format,compress&crop=faces&dpr=2&fit=crop&h=640&w=640)
Men's Brighton Base Layer
![](https://m.media-amazon.com/images/I/61+Sgw7VWJL._AC_SX466_.jpg)
Simply Merino Pure Wool Kids Thermal Shirt Underwear
![](https://smartwool.ca/media/catalog/product/cache/92f6dee6168e48cbd33a24ef586ebd08/s/w/sw016952l40-1-p_1.jpg)
Men's Classic All-Season Merino Base Layer Long Sleeve
![](https://www.simplymerino.com/cdn/shop/products/thermal-underlayer-bottom-children-up-to-age-12-simply-merino-clothing-co-2t-raisin-910814_1200x1200_crop_center.jpg?v=1693264148)
Merino Wool Underlayer (bottom)
Designed to fit snug, Simply Merino thermal bottoms work great as a layer under all of your kid's favourite activity gear (hockey, skiing, skating,
![](https://www.simplymerino.com/cdn/shop/products/thermal-underlayer-bottom-children-up-to-age-12-simply-merino-clothing-co-2t-soft-rust-920029_683x1024.jpg?v=1693258975)
Merino Wool Underlayer (bottom)
Simply Merino pyjamas are naturally fire resistant, regulate body temperature, and are incredibly soft and comfortable on even the most sensitive
![](https://www.simplymerino.com/cdn/shop/files/pajamas-children-up-to-age-12-simply-merino-clothing-co-12-18-months-tiedye-326684_1200x1600.jpg?v=1710278363)
Pajamas
![](https://alpinefit.com/cdn/shop/products/alpinefitmerinowoolisostatict-necktop_3.jpg?v=1670229722&width=2048)
Women's Merino Wool Base Layer T-Neck Top
![](https://www.icebreaker.com/dw/image/v2/AAFX_PRD/on/demandware.static/-/Sites-master-catalog/default/dw8ed5cc90/104365/104365A75_1.jpg?sw=1290&sh=1693&sm=fit)
Merino 200 Oasis Long Sleeve Crewe Thermal Top - Icebreaker (US)
![](https://www.simplymerino.ca/cdn/shop/files/IMG_4412_600x800.jpg?v=1710183416)
Shop– Simply Merino Canada
![](https://s3.amazonaws.com/images.gearjunkie.com/uploads/2020/02/BestBaseLayers_PCEricPhillips.jpg)
The Best Base Layers for Women of 2024
Made from the softest Australian Merino wool, the style is similar to our best selling children's Thermal Top. We've added a high neck scoop neckline
![](https://www.simplymerino.com/cdn/shop/products/womens-top-adults-simply-merino-clothing-co-x-small-paprika-103478_683x1024.jpg?v=1694464150)
Women's Top