Kid's Midweight Base Layer Bottoms – 100% Merino Wool (XS-L, Ages 4-12)
Cold children are never fun to deal with—and neither is cutting outdoor adventures short. These midweight merino wool bottoms keep kids warm enough to play outside all fall and winter long, whether they're building snow forts, hitting the ski slopes, or hiking frosty trails. The 235 GSM 100% merino wool insulates even when wet (important for kids who find every puddle and snowbank), wicks moisture during active play, and resists odor between washes—meaning fewer mid-trip laundry emergencies.
Why You'll Love These Base Layer Pants:
The covered waistband puts soft merino next to skin with no scratchy elastic, while the flyless design creates a smooth, comfortable front. Flatlock seams prevent chafing during all-day wear, and the regular fit leaves room for active movement without being baggy. Machine wash AND dry—because parents have enough to do already. UPF 50+ protection shields young skin during sunny winter days.
Why 100% Merino?
Pure Australian merino wool naturally regulates temperature—warming up when kids stand still and cooling down when they're running around. The 18.5 micron fibers feel soft against sensitive skin, not scratchy like traditional wool. Merino's natural antimicrobial properties keep odors at bay, so these bottoms stay fresher longer between washes. Perfect as a base layer under snow pants or as cozy pajamas on cold nights.
Size & Fit:
Regular fit with room to move. Runs true to size. Age-based sizing from XS (ages 4-5) through L (ages 11-12).
| Size | Age | Waist | Hip | Height | Weight |
|---|---|---|---|---|---|
| XS | 4-5 yrs | 21-22" | 22-23" | 40-44" | 35-45 lbs |
| S | 6-8 yrs | 22-23" | 24-26" | 45-50" | 46-60 lbs |
| M | 9-10 yrs | 23-24" | 27-29" | 51-55" | 61-80 lbs |
| L | 11-12 yrs | 24-25" | 30-32" | 56-60" | 81-100 lbs |
Care Instructions:
Turn inside out before washing. Machine wash cold on gentle cycle, tumble dry low. Use Nikwax Wool Wash or mild detergent. Never use fabric softener or bleach. Store in an airtight container to protect from moths during off-season.
Complete Your Look:
Pair with the matching Kid's Midweight Crew for complete cold-weather protection. Add merino wool socks for warm feet. Browse our full merino wool collection for Alaska-tested family gear.
Kid's Midweight Base Layer Bottoms – 100% Merino Wool (XS-L, Ages 4-12)
Cold children are never fun to deal with—and neither is cutting outdoor adventures short. These midweight merino wool bottoms keep kids warm enough to play outside all fall and winter long, whether they're building snow forts, hitting the ski slopes, or hiking frosty trails. The 235 GSM 100% merino wool insulates even when wet (important for kids who find every puddle and snowbank), wicks moisture during active play, and resists odor between washes—meaning fewer mid-trip laundry emergencies.
Why You'll Love These Base Layer Pants:
The covered waistband puts soft merino next to skin with no scratchy elastic, while the flyless design creates a smooth, comfortable front. Flatlock seams prevent chafing during all-day wear, and the regular fit leaves room for active movement without being baggy. Machine wash AND dry—because parents have enough to do already. UPF 50+ protection shields young skin during sunny winter days.
Why 100% Merino?
Pure Australian merino wool naturally regulates temperature—warming up when kids stand still and cooling down when they're running around. The 18.5 micron fibers feel soft against sensitive skin, not scratchy like traditional wool. Merino's natural antimicrobial properties keep odors at bay, so these bottoms stay fresher longer between washes. Perfect as a base layer under snow pants or as cozy pajamas on cold nights.
Size & Fit:
Regular fit with room to move. Runs true to size. Age-based sizing from XS (ages 4-5) through L (ages 11-12).
| Size | Age | Waist | Hip | Height | Weight |
|---|---|---|---|---|---|
| XS | 4-5 yrs | 21-22" | 22-23" | 40-44" | 35-45 lbs |
| S | 6-8 yrs | 22-23" | 24-26" | 45-50" | 46-60 lbs |
| M | 9-10 yrs | 23-24" | 27-29" | 51-55" | 61-80 lbs |
| L | 11-12 yrs | 24-25" | 30-32" | 56-60" | 81-100 lbs |
Care Instructions:
Turn inside out before washing. Machine wash cold on gentle cycle, tumble dry low. Use Nikwax Wool Wash or mild detergent. Never use fabric softener or bleach. Store in an airtight container to protect from moths during off-season.
Complete Your Look:
Pair with the matching Kid's Midweight Crew for complete cold-weather protection. Add merino wool socks for warm feet. Browse our full merino wool collection for Alaska-tested family gear.