Lost Boys Merino Long Sleeve - VF Series
Soft Merino | Fast Dry & Anti-Odor | Travel Ready
What makes this shirt amazing?
- Lightweight merino balances softness and durability
- Naturally anti odor for multi day wear
- Natural UPF 30+ sun protection for long days outside
- Temperature regulating and breathable for hot or cold climates
- Flatlock seams for chafe free comfort
- Drys fast and packs small for travel and adventure
- Thumbholes keep sleeves in place while layering and added coverage
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If you ever damage any of your apparel, we'll repair it for free, for life.
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Your do-it-all merino top.
Built for travel, trail, and everything in between, our Lost Boys Merino collection delivers lightweight comfort and performance in one versatile layer. The merino naturally resists odor, regulates body temps, and wicks moisture, keeping you fresh no matter how far you roam.
Soft, stretchy, and breathable, it moves with you from high output adventures or long travel days. Flatlock seams prevent chafing under packs, and the low bulk design makes it perfect on its own or as a base layer.
Part of the Venture Far Series, it’s crafted with premium materials and refined construction built to handle years of hard use and big miles. Packable, durable, and effortlessly functional, it’s the shirt you grab when you want one layer that can do it all.
Features & Specs
- Best For: Travel, hiking, trail running, winter layering and daily wear.
- Fabric: Premium merino wool for breathable warmth and odor resistance
- Sun Protection: Natural UPF 30+ coverage for long days outside
- Fit: Athletic cut designed for movement and layering
- Performance: Regulates temperature and wicks moisture
- Details: Thumbholes for coverage, secure fit, and ease of layering
- Construction: Flatlock seams for chafe free wear
- Packability: Lightweight and compact for travel
- Series: Part of the premium Venture Far Series
Fabric Details / Weight
- Fabric: 52% RWS-certified Merino Wool, 35% Tencel, 13% Nylon -- RWS certification covers animal welfare, responsible land management, & supply-chain traceability. Tencel adds a cooler, smoother feel & helps move moisture away from your skin.
- Weight: 169g (size M)
- Fabric Weight: 130gsm
- Fiber Micron: 18.9 -- The most durable Merino micron we tested that still maintained a fine, luxurious, zero-itch feel in this tencel / nylon blend.
Wash / Care Instructions
Wash cold on gentle and air dry. If using a dryer, do not use heat to keep your Merino gear dialed for countless wears.
We engineered our Merino gear to last and to handle real miles, real sweat, and real outdoor pursuits, but the nature of Merino means high heat dryers and rough wash cycles can shorten its life.
Shipping / Returns
- Fast & Free Shipping: Available on all U.S. orders.
- Free Returns & Exchanges: Items must be new and unwashed.
- Expedited Shipping Cutoff: Orders placed by 12 PM PST ship the same day. Orders placed after 12 PM PST ship the next business day.
- International Shipping: Free on orders over $100.
- More Info: Visit our Shipping & Returns page for full details.
What Customers Are Saying...
Joaquin
Fantastic Merino Shirt
I traveled with this for a few weeks in a hot, humid environment and just rinsed it out in water a few times to keep it fresh but it never got smelly like a good merino! Fabric is nice and soft.
Ain
Good For Cycling In Cold
Bought it for an extra layer for this winter cycling season. It's light breathes really well and help retain some warmth without overheating. Doesn't retain odor like pure synthetics.
Taylor
Amazing. My standard for KETL stuff, and it delivers.
As with everything I've ordered from KETL, the quality, comfort, fit, and look are awesome.es, expensive, but I'm a minimalist, and each piece of clothing I buy needs to be a 9/10 in all areas. KETL consistently delivers, so the value is there.
Product Overview
The KETL Commitment
Everything we make is guaranteed to be amazing & last a lifetime. We stand behind our craftsmanship with a lifetime warranty & offer a thorough repair / replace program. Visit our Warranty / Repairs page for more information on our commitment to excellence.
Love the shirt. Very comfortable. I'm about 5'9 and 188 pounds and I have the XL. Fits nice. I could probably get by with the large for a less loose fit if I want. My chest is about 46. I have black and I'll probably get some more colors and try one in the large size.
I’ve tried many merino shirts from various brands and 100% merino never wins. It’s too delicate, shrinks way too much when you mistakenly wash it incorrectly and sometimes can be very itchy.
This merino blend is great. It’s soft, lightweight and shrank just the right amount after taking a risk and just washing it with everything else.
I’m 5’11” & ~195lbs and I find myself between L and XL with some of Ketls gear. I gambled on XL, which was too larger out of the box, and washed it which intentionally shrank it. Fit is good now. Perhaps a little boxy in the torso but it’s comfy and not fitted. I’m so happy with it, I have a few other colors.
I will be buying many more thank you!
Worked great. Took them on a multi-week trip throughout Asia during the summer and could wear them for multiple days before having to wash them or switch them out.
Great shirt, perfect for a dudes backpacking trip — was the envy of all.
Loved these shirts. In the photo I have the short sleeve on underneath and the long sleeve on top. While hiking in high 40’s and 50’s in Glacier they were more than warm enough, during breaks i’d throw on a jacket if needed. Moisture wicking, very comfortable. Super happy with the purchase. Prob buy more in future, would love to see other colors if that’s ever possible?
The nofry Sunhoody is on par with my outdoor research garment for a fraction of the price. I appreciate the button closures, improved hood, and sleeve thumb loops.
This is a fantastic shirt that feels like it will stand the test of time. Lightweight and stretchy but feels durable. Only time will tell how durable it truly is but it's holding up well so far and the lifetime warranty means if I rip it I can get it taken care of instead of throwing it out.
I picked this shirt from the Ketl line because of it's Merino Wool content. It did not disappoint. I've been on hikes, runs, gym workouts, and to work in the shirt so far and it's been great for both. When it showed up I wore it for several days straight to simulate a several day trip and it resists odor like merino should.
My only request was more colors but upon re-investigation of the website it looks like there's been a restock with additional color choices. Way to be ahead of the game boys!
I'm 5'7", weigh about 185, and bought a medium for reference.
I think this shirt can save the planet! I can use for several days doing electrical work, it’s non melting fibers make it safe to work in. It’s comfortable, looks great and to top it off I can wear it for days without washing. No smell! No extra water and power waste. I need to buy more.
Merino wool is life changing . So is Ketlmtn apparel! Days in south Florida sun and I still
Smell nice . Thanks ketl bros
I have been very happy with the Lost Boys Merino LS top. Just wore it for multiple days in a row on a trip to Door County Wisconsin.
It went from hiking along the rocks in sun to a light house in the clouds and wind. Was breathable and kept me comfortable. Just brought that and one short sleeve shirt. Nice to be able to pack light!
I live in the Arizona desert and sun protection is important. I’d rather not put all those chemicals on my skin. I like this T-shirt as a better option. It is lightweight and I like that it is a natural fiber that won’t trap sweat and bacteria. It is expensive but good quality so far I am happy but I am a little afraid of a moth trying to eat the wool. Wondering if I should store it in a plastic container. Everything in life has its plus and minus. So far so good!
Very nice feeling shirt. Soft, breathable. Does let wind through a bit so don’t count on it alone if you’re dealing with brisk winds. Great for exploring with the dog
Awesome top! Looking forward to using it out on the trail. It is extremely well made and of the highest quality materials.
Fantastic quality and build. Would have rated 5 stars but the neck line is a little on the larger side, which may be specific to my item or taste. Either way, not a big issue, and otherwise fits very well.
