CLOUDLINE
No-Show Running Sock - Ultralight
No-Show Running Sock - Ultralight
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Men's Ultralight Merino Wool No-Show Running Sock
Experience the perfect blend of comfort and performance with our men's ultralight no-show running sock. Engineered with ultra-soft merino wool and reinforced nylon, these socks deliver exceptional durability without sacrificing comfort — or adding unnecessary weight.
Cloudline's merino wool is naturally moisture-wicking and breathable, keeping your feet cool and fresh mile after mile. The ultralight construction delivers a barely-there feel underfoot, while the minimalist no-show design stays hidden in your shoes and enhances airflow on warm-weather runs. A precision fit prevents blisters and keeps the sock in place — whether you're training or racing.
The perfect men's ultralight merino wool running sock for road running, trail running, and fast-and-light days. Log as many miles as you want — these socks will keep you moving fast and feeling fresh.
Free USA Shipping on Orders Over $75
Covered by the Cloudline Lifetime Guarantee
- Compostable Shipping Materials
- Carbon Neutral Shipping
- Free Exchanges and Returns
Size Guides
Sock Size Guides
| WOMEN'S | US | UK | Europe | CM |
| Small | 4 - 6.5 | 2 - 4.5 | 35 - 37 | 20.5 - 23 |
| Medium | 7 - 9.5 | 5 - 7.5 | 38 - 40 | 23.5 - 25.5 |
| Large | 10 -12.5 | 8 - 10.5 | 41 - 45 | 26 - 28.5 |
| X-Large | 13 - 15 | 11 - 13.5 | 46 - 49 | 29 - 31 |
| MEN'S | US | UK | Europe | CM |
| Small | N/A | N/A | N/A | 20.5 - 23 |
| Medium | 6 - 8.5 | 5.5 - 8 | 39 - 41 | 23.5 - 25.5 |
| Large | 9 -11.5 | 8.5 - 11 | 42 - 44 | 26 - 28.5 |
| X-Large | 12 - 14.5 | 11.5 - 14 | 45 - 47 | 29 - 31 |
| KID'S | SIZE | AGE | INCHES | CM |
| X-Small | 6T - 8.5T | 1.5- 3.5 | 5 - 6 | 12.7 - 15.24 |
| Small | 9T - 11.5T | 3.5 - 5.5 | 6 - 7 | 15.25 - 17.78 |
| Medium | 12T -2.5Y | 5.5 - 8.5 | 7 - 8 | 17.79 - 20.32 |
Base Layer Size Guides
| WOMEN'S | X-Small | Small | Medium | Large |
| Chest | 16 5/8" | 17 5/8" | 18 5/8" | 19 5/8" |
| Waist | 14 3/8" | 14 3/4" | 15 1/8" | 15 1/2" |
| Length | 24 7/8" | 25 1/2" | 26 1/8" | 26 3/4" |
| MEN'S | Small | Medium | Large | X-Large |
| Chest | 19 3/8" | 20 3/8" | 21 3/8" | 22 7/8" |
| Waist | 18 5/8" | 19 5/8" | 20 5/8" | 22 1/8" |
| Length | 28" | 28 5/8" | 29 1/4" | 29 7/8" |
Collapsible content
SOCK FEATURES
SOCK DETAILS
LIFETIME GUARANTEE
If you wear out a pair of Cloudline socks our team is here to get them replaced with our simple warranty process so you can get back on the trail.
Merino You Can Feel Good About
Cloudline socks are knit exclusively with premium merino wool certified by the Responsible Wool Standard. This ensures our wool comes from farms that take a responsible approach to land management, and follow the principles of the Five Freedoms for Farm Animals.
I love these socks, great price for this quality! My dog actually got a hold of them and was chewing them for a minute before I noticed. THEY HAD NO HOLE… this is actually unheard of, I probably replace more socks for that reason than anything. Def recommend
“I actually have 20 pairs of Cloud line socks. They are warm in the winter & cool in the summer. High quality wool socks that don’t shrink and are actually made to fit adults. Love my socks.
These are so good and love that I can rest easy knowing the lifetime guarantee!
Love the socks, very comfortable!!
Love the socks, very comfortable!!
Realized the size I ordered initially was a little tight for my feet, so I reached out and customer service was amazing. Got a new pair ASAP and free return shipping. Very comfortable and the return process for damaged socks is much easier than others. I have three sets now and have gifted them to friends. Give them a try!
i love these socks so much! i was almost upset when i realized that you really can wear merino wool socks when it's kind of hot outside, and they really do help your feet, even if you have hyperhidrosis like me :rainbow: trans rights!
these socks are solid. wore them for about 5 days straight, biked in them and sweat profusely in them. They still smelled brand new at the end without wash. great stuff
Just enough cushion to make walking comfortable, not so much "warmth" that my feet get hot.
First impressions are positive on the Cloud Line No Show Ultralight running socks. They seem to work well so far the test will come in how well they hold up over time. Having used many different socks over the years hopefully these will hold up to the test of time.
Awesome socks, and the lifetime warranty is tough to beat. Will be buying more!
Not only are the socks super comfortable but the customer service was great when I contacted them that I made my initial purchase with incorrect sizes.
No idea why this brand isn’t a household name. These socks out-perform every other wool sock I’ve tried (and I feel like I’ve tried them all). Especially for warm-weather runs, they fit great, don’t overheat, and they’re super durable.
Sock is comfy and seems to hold up well so far
These Ultralight no-show socks are what I use during Spring/Summer when I'm wearing shorts.
They hit right below the ankle bone, so they rise a little higher than a "true" no-show sock, but I prefer that to the sensation of a lower-rising sock constantly on the precipice of slipping off.
They keep my feet fresh and dry, and the ultralight weight is very breathable.
Also, I have to say CloudLine has some of the best customer service out there, so if there are any issues, they make sure you're well taken care of.
Give them a try!
I've tried many different brands and Cloudline is the BEST! They do not slip off my heal, handle moisture well, and look very nice! Customer for life!
As always, these socks fit the bill perfectly! I typically don’t wear anything else but Cloudline with my Solomons. Wool is the way to go and these are great socks! Highly recommended!
Great and fast customer service. The only socks I wear for the past few years. No more smelly feet.
Fits, doesn't slip, is comfortable
Bought a pair of these while on a quest for merino ultralights with no cushion ( I live in the desert and my feet run hot) and loved the feel the first time I put them on. Unfortunately I ordered size L for my 10.5 feet and they were very tight in the toes. I reached out to support and Sara (owner?) Gave me 3 options. Refund, try different style with cushion, or size up. I decided to try the XL and they were shipped to my door free of charge in a few days. Didn't even have to send the old ones back. Now that's what I call customer service! Tried them on and they are perfect now. So comfortable. Will be buying more and recommending to people for sure. Gotta love American made and they actually shipped from Seattle. Go Cloudline!
Great customer service. When they say they stand behind their products, they do. Don’t change!!!
Bought these for my husband. He LOVES them!!! Bought extra pairs so he would have extras
Highly recommend
These are my least favorite out of my order. They seem to be much tighter in the toes than all the other styles of socks. Maybe the cushion make a difference. All my other socks were medium cushion and they feel good in the toe box.
Nice cushion . Moisture wicking ,
There are only Cloudline Socks in my sock drawer. This was my first purchase of the no-show running socks, though, and they are great, too! Extremely comfortable, great fit, and they keep my feet dry - definitely recommended.
The only socks I wear
Great socks!
These are the 3rd type of Cloudline socks I own now. I work outside everyday and these will be my summer socks. One type I bought just for work in the winter, I only bought 6 pairs. This winter was my second winter with them, they get at least 10,000 rough hard steps everyday. They still feel great on my feet and are still going strong. I will not buy any other brand. I am a cloudline lifer!
These socks are comfortable and wear well.
My new favorite socks. Perfect fit and weight
Great quality and fit. The lifetime warranty doesn't hurt either.
I have had 3 pairs for a number of years and needed one more pair to fit my workout routine. There was no need to shop around. I knew I was going to buy these socks. The fit and finish is perfect.