Best boys’ thermal underwear bottoms

Best for Sports

Our fitness expert’s youth clients love the maximum wicking protection of these Nike tights.

A trusted brand that kids really love. Tight, stretchy fit designed to be worn under shorts, especially during cooler months. Provides proven moisture-wicking technology that removes sweat from skin making it perfect for any activity. Convenient media pocket.

Youth Boys' Compression Thermal Pants

Slightly pricey. Has obvious branding that some parents may not love.

Best Bang for the Buck

BALEAF

Highly Rated

A stretchy, fleece-lined thermal bottom with an athletic cut that sits close to the body.

Quick-drying material removes moisture. Brushed inner lining provides warmth. Stretchy fabric for movement. Elastic waistband for secure fit. Smooth, flatlock seams minimize chafing and irritation. Reflective logo for visibility.

2 Pack Youth & Boys Thermal Pants

Sizes run small. Length does not quite reach ankles.

DEVOPS

Bargain Pick

Constructed with a flexible material, this thermal underwear bottom offers extra stretch and shape retention.

Ultra-soft tech fleece interior has cozy feel and superior comfort. 4-way stretch fabric for maximum mobility. Moisture-wicking to dry quickly. Close-fitting style traps body heat. Full-length construction for coverage. Retains shape with washes.

3 Pack Youth Boys' Base Layer Leggings

Material is a little thin and prone to ripping.

Rolimaka

Great Value

A value pack of 3 underlayer bottoms that are ideal for both cold and warm seasons.

Quick-drying fabric is breathable and soft. Compression fit protects and supports to reduce risk of injury. Stretchy waistband for snug support. Flatlock seams reduce chafing and irritation. Anti-odor tech keeps fresh all day.

Kids Unisex Thermal Bottoms

Some reports of fabric being itchy.

MERIWOOL

Comfy Fit

Soft and comfortable merino wool base layer in a variety of patterns makes this one of our expert's top picks.

Made of medium-weight, 100 percent merino wool. Designed to prevent chafing. Naturally odor-resistant and quick drying to save on space and washes. Works as under layers or as pajamas thanks to the wool fabric.