Kids Merino Underwear Briefs
Get it in time for the holidays
- Standard shipping: Order by 12.12
- Expedited: Order by 12.18
Fit tip from us: these run small. We suggest sizing up one size for longer-lasting wear and comfort.
Made with the same breathable, odor-resistant merino blend you know and love, these undies move with your little one through all kinds of play—indoors or out. Soft enough for everyday comfort, durable enough for big adventures.
Best For: Everyday comfort—backyard playdates, outdoor school adventures, travel days, family camping trips, and even layering under snow gear. The Kid Adventure Underwear are built for all seasons and every stage (potty training included).
Warmth: Lightweight and breathable on their own for warm days; adds a soft, extra layer under pants or snowsuits when temps drop.
Softness: Crafted from superfine merino wool, they’re silky smooth and gentle on even the most sensitive skin—no irritation, just cozy comfort where it matters most.
Convenience: Stretchy pull-on waistband makes independent dressing easy (and helps little hands master potty training). Grows with your child for lasting wear.
Functionality: Form-fitting design moves with your kid from hiking trails to naptime; odor-resistant, quick-dry fabric means fewer outfit changes and easier packing for trips.
Sustainability: Made from 100% natural merino wool, it’s renewable, biodegradable, and machine washable for easy care—perfect for eco-conscious parents.
Fabric:
- Material: 100% Responsible Wool Standard (RWS) Merino Wool
- Weight: 230 gsm, 18.9 micron – lightweight, breathable, and perfect for year-round use
Craftsmanship:
- Thoughtfully crafted in Vietnam by skilled artisans.
- Produced responsibly and sustainably, following RWS guidelines to ensure ethical practices and fair working conditions.
How to Care:
- Machine Wash: Use the gentle cycle with cool water and a mild or wool-specific detergent.
- Drying: Lay flat to dry to preserve shape and softness. Alternatively, tumble dry on low with similar items.
- Refreshing Without Washing: Merino wool naturally resists odors and bacteria, so it doesn't require frequent washing. Simply hang your merino outside for a few hours to restore freshness.
- Preventing Moth Holes: Store your merino garments in a clean, dry space. Use airtight storage bags or bins to block moth access. Add natural moth repellents, such as cedar blocks or lavender sachets, to your storage area. Wash or air out your garments periodically to remove odors or residues that may attract moths.
- Adventure Ready: Once clean and dry, your merino is ready for all your journeys, big or small!
Free Exchanges: Initiate a return or exchange here
Ships within 24 hours: Mon.-Thurs. (excluding holidays)
Mix & match any Shorts, Undies, or Tanks — 3 for 20% off with code BASICS.
the magic of merino
From summer sprinklers to winter snow layers, merino pulls moisture away—keeping skin dry, comfy, and rash-free.
Delicate baby skin deserves the softest touch, and merino delivers without any itch.
Not too hot, not too cold—merino naturally adapts to all seasons. Wear solo in summer or layer under in winter.
Cause kids. Our merino is machine washable and can be laid flat or tumble dried.
better adventures
Your go-to for comfort, confidence, and all-day fun—on trails, at school, or anywhere they roam.
- Stretch waistband for pull-on ease and growing adaptability
- Form-fitting design for seamless comfort under layers or solo
- Odor-resistant & quick-dry, so they're ready for game day after day
better for the planet
Merino comes from our wooly friends, the merino sheep. Unlike polyester/synthetic fabrics that end up in our landfills for hundreds of years (yikes), the Adventure Underwear can be composted in six months.
- 100% natural merino wool—renewable and biodegradable
- machine-washable for easy care
