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Shop All OS1ST

OS1st AC4 Active Comfort No Show Socks

5.0
5 Reviews
Shop All OS1ST

OS1st AC4 Active Comfort No Show Socks

5.0
5 Reviews
$15.99
OS1st AC4 Active Comfort NoShow Sock SM Black
In Stock: 1
Price: $15.99
  • Color: Black Stock # OS1-100541B
  • Sock Size: SM
OS1st AC4 Active Comfort NoShow Sock MD Black
In Stock: 3
Price: $15.99
  • Color: Black Stock # OS1-100543B
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock LG Black
In Stock: 6+
Price: $15.99
  • Color: Black Stock # OS1-100545B
  • Sock Size: LG
OS1st AC4 Active Comfort NoShow Sock XL Black
In Stock: 4
Price: $15.99
  • Color: Black Stock # OS1-100547B
  • Sock Size: XL
OS1st AC4 Active Comfort NoShow Sock SM Royal Blue
In Stock: 3
Price: $15.99
  • Color: Blue Stock # OS1-100541RB
  • Sock Size: SM
OS1st AC4 Active Comfort NoShow Sock MD Royal Blue
In Stock: 1
Price: $15.99
  • Color: Blue Stock # OS1-100543RB
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock LG Royal Blue
In Stock: 1
Price: $15.99
  • Color: Blue Stock # OS1-100545RB
  • Sock Size: LG
OS1st AC4 Active Comfort NoShow Sock SM Aqua
In Stock: 1
Price: $15.99
  • Color: Blue Stock # OS1-100541A
  • Sock Size: SM
OS1st AC4 Active Comfort NoShow Sock MD Aqua
In Stock: 2
Price: $15.99
  • Color: Blue Stock # OS1-100543A
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock LG Aqua
In Stock: 3
Price: $15.99
  • Color: Blue Stock # OS1-100545A
  • Sock Size: LG
OS1st AC4 Active Comfort NoShow Sock SM Grey
In Stock: 3
Price: $15.99
  • Color: Grey Stock # OS1-100541G
  • Sock Size: SM
OS1st AC4 Active Comfort NoShow Sock MD Grey
In Stock: 3
Price: $15.99
  • Color: Grey Stock # OS1-100543G
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock LG Grey
In Stock: 5
Price: $15.99
  • Color: Grey Stock # OS1-100545G
  • Sock Size: LG
OS1st AC4 Active Comfort NoShow Sock XL Grey
In Stock: 2
Price: $15.99
  • Color: Grey Stock # OS1-100547G
  • Sock Size: XL
OS1st AC4 ActiveComfort NoShow Sock SM Pink Fusion
In Stock: 1
Price: $15.99
  • Color: Pink Stock # OS1-100541PF
  • Sock Size: SM
OS1st AC4 ActiveComfort NoShow Sock MD Pink Fusion
In Stock: 1
Price: $15.99
  • Color: Pink Stock # OS1-100543PF
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock SM White
In Stock: 2
Price: $15.99
  • Color: White Stock # OS1-100541W
  • Sock Size: SM
OS1st AC4 Active Comfort NoShow Sock MD White
In Stock: 6+
Price: $15.99
  • Color: White Stock # OS1-100543W
  • Sock Size: MD
OS1st AC4 Active Comfort NoShow Sock LG White
In Stock: 1
Price: $15.99
  • Color: White Stock # OS1-100545W
  • Sock Size: LG
OS1st AC4 Active Comfort NoShow Sock XL White
In Stock: 1
Price: $15.99
  • Color: White Stock # OS1-100547W
  • Sock Size: XL

Here at Running Warehouse, we want you to be completely satisfied with your purchase. If you are unsatisfied with your purchase for any reason, items can be returned with free return shipping within 90 days from the original invoice date.

We will match or beat any posted overall price advertised in-store or online on in stock items.

Overview

The OS1st AC4 Active Comfort No Show Socks are designed to deliver cushioned comfort all day long. Featuring extra cushioning in the heel and toe areas, the socks are made from soft bamboo charcoal fibers for a highly comfortable fit. An ultra-thin Skin Thin™ panel along the top helps to promote airflow and regulate temperature for optimal breathability. Additionally, the seamless construction is treated with silver-ion technology to keep you dry and prevent odor. To prevent the socks from slipping down, a Y-Gore heel is integrated into the design.

Sock Thickness

Thin
Medium
Thick

Sock Height

No Show
Low
Quarter
Crew
Knee High

Sock Thickness

  • Thin: Thin socks are typically ultra-lightweight, highly breathable, and quick-drying. These socks are ideal for snug-fitting shoes, like racing or competition options, or for the runner who prefers a more minimal approach to their footwear.
  • Medium: Medium-thickness socks offer a blend of cushioning, moisture-wicking, and added comfort. These socks work well for most runners and can provide an extra sense of protection in everyday running shoes.
  • Thick: Thick socks provide full cushioning for a plush ride and extra comfort. These socks are useful for runners looking for underfoot protection or those who are looking to remove any extra space in their shoes.

Sock Height

  • Low: Low-cut socks go no higher than the middle of the anklebone. No-show socks, which do not go higher than the top of your shoes, are also in this category.
  • Quarter: Quarter socks are higher than low-cut socks and usually cover the anklebone entirely. This provides a feeling of stability in the ankle, and alleviates most blistering that could be caused when low-cut socks creep down and expose the skin on the back of the heel.
  • Crew: Crew socks go as high as mid-calf. They provide full foot, ankle, and low leg coverage for a variety of activities.

Product Details

Model Number: OS1-10054

Sizing

Size Guide
Men's*
  Women's*  
SM
4.5 - 6.5
" 5.0 - 7.5
MD
7.0 - 10
" 8.0 - 11
LG
10.5 - 13.0
" 11.5 - 13.0
XL
13.5 - 16.0
" -

Care Instructions: Wash gentle on cold. Tumble dry on low heat. No bleach or fabric softener. 

Details:

  •  Bamboo charcoal ionized fibers for durability and plush comfort
  • Silver-Ion treated for odor prevention & moisture regulation
  • Y-Gore heel prevent slippage
  • No show design
  • Additional cushioning in heel and toe
  • Seamless design 
  • Ultra-thin Skin Thin™ panel at the top for breathability

    Customer Reviews

    5.0 out of 5
    5 Customer Reviews
    5 out of 5 Stars
    Would Recommend
    comfortable fitgood sock
    5 out of 5 Stars
    Would Recommend
    Best long distance socksI ran Grandma's marathon in these socks in the rain and my feet felt great and no blisters!
    [This review was collected as part of a promotion.]
    5 out of 5 Stars
    Would Recommend
    Top 5 sock of all time!Comfortable fit while running a half marathon. Will buy another pair soon.
    [This review was collected as part of a promotion.]
    5 out of 5 Stars
    Would Recommend
    New Favorites!Love the new OS1st AC4 Active Comfort No Show Socks. Very comfortable, supportive and odor resistant. These will go in the rotation with my Feetures and Balegas.
    [This review was collected as part of a promotion.]
    5 out of 5 Stars
    Would Recommend
    Great socks!These socks have just the right amount of compression, but still feel comfortable. I can’t say yet how durable they are with only two weeks wear, but so far they seem well made and aren’t coming apart anywhere. So I’ll give them a thumbs up there.
    [This review was collected as part of a promotion.]
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