CLOUDLINE
1/4 Top Running Sock - Ultralight
1/4 Top Running Sock - Ultralight
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Men's Ultralight Merino Wool Running Socks – ¼ Top
Built for warm-weather trail runs, ultramarathons, and long days on the move, our men's ultralight merino wool running socks are Cloudline's lightest performance sock — engineered to keep your feet cool, dry, and blister-free from start to finish.
Cloudline's merino wool is naturally moisture-wicking and odor-resistant, delivering exceptional breathability whether you're climbing mountain trails or logging miles on the road. The ultralight construction keeps things barely-there underfoot, while the ¼ top ankle height sits just above the ankle to keep dirt, pebbles, and debris out so you can stay focused on the run. A smooth, precision fit means no rubbing, no slipping, and no blisters — mile after mile.
Perfect for trail running, ultramarathons, warm weather training, and hiking — these men's ultralight running socks are built to go the distance without slowing you down.
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.
Great summer hiking socks. No pics of the 1/4 tops. Here’s the mid weights at work on the Appalachian trail Round Bald N.C.
Best of the best
Fantastic sock. I ordered these in XL and the medium cushion in L. These definitely are more snug so I’m glad I sized up, but I love them.
I took 2 pair of Cloudline 1/4 Top Running Socks Ultralight on an 11-day bikepacking trip. They did not disappoint.
Perfect for a summer outing.
These are awesome. Been running trails in them, working, going to school, riding my motorbike etc… Warm in cold weather, cool when it’s hot, just perfect.
I’ve been wearing them for 3 days straight and still no noticeable smell, which is really amazing compared to my ordinary socks which are drenched in sweat after work (I wear security boots) and stink like really bad cheese…
Cloudline socks are very comfortable and true to size. These ultra light socks keep my feet dry all day long, and the wool material is great for running outdoors and working out at the gym. Excellent stitching and perfect combination of colors.
These are pretty much the only socks I wear for running and most other activities. Incredible durability compared to other merino socks. Wish they made lightweight running shirts.
Good socks, but they feel much thicker than "ultralight," which is disappointing, as I bought them to use during warm months, and I notice they're not as good with keeping my feet as dry as other Cloudline socks do.
These socks are very comfortable and durable. Well worth the money as my son goes through regular socks very fast. I hated buying socks every few months because of holes. The warranty on these is great!
Great socks, really wish they had more colors with higher contrast like black w white stripes
These are great USA-made socks at a reasonable price, but 1 recommendation: broaden out the width of the toe area a bit. A little more wiggle room here would help a lot.
Cloudline is my go-to for trail running socks, whether their no-show or quarter height, even their calf high hiking socks!
Every pair of Cloudline socks is solid, and easily outlast anything else out there, while also being breathable and extremely comfortable. I've never gotten hot spots or blisters while wearing these socks.
You can feel the sea at the toes-- bummer.
These socks are tighter than other ones I have from cloud line.
These socks are tighter than other ones I have from cloud line.
Did a 7 mile hike with these awesome socks.
Great quality socks and top notch service when I ordered wrong initially. Will be ordering more socks from Cloud Line.
Terrific for close-fitting running/hiking shoes. Comfortable and durable.
I have tried both brands and Cloudline is far superior in my opinion. Cloudline fabric feels totally different and more 'high end' if that males sense. When I step onto the concrete floor at work I can definitely tell the difference. Cloudlines outlast Smartwool by far in my weekly work rotation. I estimate by around 30% in the same weight cushion level. Stop scrolling, just buy them.
...why are you still reading? Just click buy. They'll take them back if you dont agree.
Best socks I have ever had especially for running. They are comfortable and hold up great.
I own like 10 pairs and wear them every day.
These socks deal great on, last forever, and give me options for how much cushion I need for the day. Would highly recommend!
I wear these socks every day at work, which often means six days a week. When I’m not working I’m out in the forest hiking or trail running with my dogs. These socks are comfortable and are great at wicking away moisture. The best part is that they never seem to wear out. This is my second order because I liked the ones in the first order so much.
Great socks with plenty of padding!:+1::golf:
Quality cosy socks.
I have been using these socks for just over a year (this was a second purchase for me). I have nothing but good things to say. They are comfortable, fit well, and are all around good socks. I have replaced 99% of all my daily wear socks with Cloudline no show and quarter ultralight socks. I do have the light weight socks that I use for heavy exercise/lateral movements for more cushion. While a little warmer the extra support provided is nice.
Also, the lifetime replacement is great. I had a sock develop a hole in the heel. I followed the replacement process and it worked flawless. Great service!
Great fit, just the right thickness
What a great product - wears like iron - feels like nylon-breathes like cotton - every sock should be this good - thank you.
Solid running/hiking socks. This is my third pair of CloudLine Sock and I continue to love them. I purchased these for spring trail running and they have done a great job so far. Some merino socks from other companies wear out on my heel, and don't fit correctly. These socks feel like they are made for my feet and I know from previous experience that they will last compared to some of the other big brands.
Really enjoy the 1/4 Top sock, but wish it was offered in other cushion options, thicker would be great for when I’m hiking long distances.
This was return because of hole in the arch of the sock. The took care of it quickly and effortlessly. Easier that returning stuff to walmart:grin:
The socks are the best socks I have every worn. Amazingly tough.