We love these underwear! My daughter is 19 months old and is on the petite size and the 2-3 fit her perfectly! She loves them. I ended up getting two more colors.
20% off 2+ Camp Capsule Items
100% Merino Wool · Naturally Soft
Kids Merino Wool Underwear
$20.00
Color
peak pink
evergreen
ocean
teton eclipse - black
Size
2-3 yr
4-5 yr
6-7 yr
8-9 yr
10 yr
12 yr
Color
peak pink
Size
Most kids underwear is cotton or synthetic. Neither regulates temperature, neither resists odor, and neither keeps up with an active kid on a multi-day trip. Merino does all three.
Why They'll Love it
- 100% merino wool: soft, stretchy, nothing synthetic
- Naturally antimicrobial: stays fresh
- No rub spots: smooth for long hikes & carriers
- Stretchy waistband: stays put without digging in
- Machine washable: simple care for busy families
The Kids Merino Wool Underwear is the layer closest to your child's skin — which is exactly why merino makes such a difference here. Soft, breathable, naturally antimicrobial, and temperature-regulating from the inside out.
On a day hike or a week-long backpacking trip, merino wool next to sensitive skin means no chafing, no overheating, and no odour building up over multiple days away from the bath. Customers consistently report their kids asking to wear these first thing in the morning — and that's the real review.
The stretchy waistband stays comfortable without digging in, even after a full day in a backpack carrier. And because merino is naturally antimicrobial, these hold up on multi-day adventures in a way cotton simply cannot.
No itching. No synthetic materials. Just the softest, most functional kids underwear you'll find anywhere.
Fabric
100% Responsible Wool Standard (RWS) Merino Wool
230gsm, 18.9 micron — lightweight, breathable, and perfect for year-round use
Where It's Made
Our merino wool pieces are thoughtfully crafted in Vietnam by skilled artisans following RWS guidelines. We believe in producing responsibly and sustainably, ensuring fair working conditions for the people behind our products.
How to Care
- Machine wash on the gentle cycle with cool or cold water and a mild or wool-specific detergent
- Lay flat to dry to preserve shape and softness, or tumble dry on low with similar items
- Hang outside for a few hours to refresh between washes — merino naturally resists odours and bacteria, so it rarely needs a full wash
Storage
Store in a clean, dry space. Use airtight bags or bins and add cedar blocks or lavender sachets to prevent moths. Wash or air out periodically to remove any residue that may attract them.
- Free standard shipping on orders over $160
- Ships within 24 hours: Monday through Thursday, excluding holidays
- Free Exchanges: Initiate a return or exchange here
- Outgrown it? Resell through Iksplor More
the magic of merino
moisture wicking
From summer sprinklers to winter snow layers, merino pulls moisture away—keeping skin dry, comfy, and rash-free.
soft & cozy
Delicate baby skin deserves the softest touch, and merino delivers without any itch.
just-right temp
Not too hot, not too cold—merino naturally adapts to all seasons. Wear solo in summer or layer under in winter.
easy care
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
Customer Reviews
Overall rating: 4.6 / 5 from 21 reviews.
Got the pink 2-3 year undies and they are perfect! Super soft and tight fitting. My toddler is in 2T and these fit great right now. I'm glad we found a natural fiber product for sensitive areas, especially for potty training!
These wool underwear are the BEST! We love bringing them for my daughter on every hike, backpacking trip, and camping trip. Warm, comfy, and hygienic!! We hope to get some more for her :) don’t skip out on these!!
I almost think these underwear are the greatest thing Iksplor makes. I’ve never seen another company offer wool underwear and I swear my daughter loves these! So comfortable, warm, and hygienic! We love to bring them hiking, camping, and backpacking! We knew we had to get pairs for my sons as well!
First thing in the morning my 3 year old grabbed these to put on for the day, she loves them and so do I. They fit perfectly all around, they are breathable and we love the bright pink color!!
Excellent quality and soft!
My girls love their merino underwear-comfortable for all day hikes and adventures, and I love that there are no harmful chemicals close to their skin!
My daughter has been wearing these on our hiking and kayaking adventures and I love knowing that she isn't wearing cotton. Plus she loves the bright pink color of course!
We sized up on these for my almost 6 year old who regularly wears a size 6. They are perfect. After trying another big merino brand that had more of a bikini cut, my daughter is thrilled to have these much more wedgie-proof undies. Planning to let her wear them as swim bottoms for splashing and the sprinkler as well. Picky 6 year old approved!
Kids didn’t like it
covers his little bum perfectly - no slippage when playing. LOVE them
Kids found them very uncomfortable
Its great, love it
Store owner replied: So fantastic to hear!! Thank you Dineke!
THESE RUN SMALL! My youngest is in between a 3T & 4T, I ordered the 4-5 yr and they fit perfectly. Not scratchy at all, super soft waistband, easy for him to put on himself, the only problem is he needs more because he want's to wear them every day!
So good!! Love the pink color and perfectly fits my 19mo!
10/10 absolutely love these! They run a little on the snug end, so the 2 is a perfect size for my 19mo. I got some for all my kids- I love finally having a merino underwear option for my kids!! It's the best for travel, adventures, etc. I love how quickly they dry and allow us to pack minimally.
My kids, 6yo girl and 10yr old boy both like the fabric and fit. While we have not worn them on any hiking adventures yet we know they will be better than cotton.
Gosh these undies are great. I wish they had them when my kiddo was a toddler. They fit well and according to my 7 yo are super comfy. She also really loves the fun colors 🥰
These underwear have quickly become one of our favorite Iksplor products! They are so soft, and my daughter always talks about how comfortable they are. They do run a tad small, so I would recommend sizing up! 10/10 :)
These little undies are so great for my 2yo! I love how durable and soft they are -- I have full confidence she's not going to get rub spots from them when she's in the backpack carrier -- and I know they are keeping her tush warm on our adventures. Nice to have the power of wool helping us on multi-day trips when we're away from the bath too!
Store owner replied: This makes us so happy to read. Knowing she’s comfy in the carrier, staying warm, and benefiting from wool on multi-day trips is exactly why we love this fiber. Thank you for trusting Iksplor on your adventures.
These are so well made and I can tell they'll last awhile. We started potty training a few weeks ago and were ready for underwear, and these showed up just in time. My toddler (2.5 yo) is in the 2-3 yr size and *loves* them. I love that she has wool, which is antimicrobial, next to her skin in her most sensitive area.
Kids Underwear Briefs – 100% Merino Wool
Store owner replied: Yes! We absolutely love hearing this Rachel. Thank you for taking the time to share your experience!