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Product Detail & Benefits


When we were introduced to Swiftwick's Performance line of compression socks, we were anxious to proudly put the Hammer Nutrition logo on them, expressing our endorsement of this ultra-smart, ultra-comfortable technology.

In addition to offering softer, stronger construction and supreme comfort, Hammer Nutrition compression socks help improve vascular performance and blood flow, reducing leg fatigue and speeding recovery after a long training session or event.

In keeping with Hammer Nutrition's Made in the USA policy, Swiftwick is manufactured in Tennessee, and the company keeps a close eye on the sources of their materials.

Size Charts:


Sock Size Men's Shoe Size Women's Shoe Size
Small 3-5 1/2 5-7 1/2
Medium 6 - 9 1/2 8 - 10
Large 10 - 13 10 1/2 - 14
XLarge 13 1/2 - 16 14 1/2 - 16 1/2

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Product Reviews

Rated 5 out of 5 by from 4" Sock Very Well Made Very well made sock. I wasn't sure about the sizing. I wear a size 12 shoe and normally buy the largest size sock offered in any brand. I was hesitant with these socks though, since I did not want them to be loose, and the next size up (XL) states that it fits a size 13.5 - 16. I went ahead and took a chance and ordered the XL. I am glad that I did. The XL fits great and still offers plenty of compression. In fact, I would like them to even be a little longer or less compression in the toe area since the toes feel a bit cramped. I cannot imagine someone with larger feet being comfortable in this size.
Date published: 2016-05-04
Rated 5 out of 5 by from Perfect of OCR! Review for tall socks: I have 3 pairs of these Switwick socks and like them all. I like the compression but I like the protection they provide more than anything. For obstacle course racing they protect your lower legs from poison oak and from getting all scratched up. They work great for mountain biking for the same reasons, protecting my lower legs from vines and branches. Only complaint is I wish Hammer Nutrition had these in black because the white gets dirty very quickly on dirt trails.
Date published: 2014-09-18
Rated 2 out of 5 by from Review is for the long compression socks Short version appears to be fine (I only tried them on so far and have not worn them on a bike ride yet). I like the feel and fit of them.  Long version appears to be  not of same quality as other long athlete-oriented compression stockings that I own. They are also a tad too short in length which renders them close to useless for that reason alone. I will be wearing them occasionally and they will be used as back ups. I am only posting this comment because I was asked.
Date published: 2013-12-31
Rated 5 out of 5 by from compression socks this is the second set of compression socks I bought and these are the perfect ones ,I bought assize Large before, my foot size is 10-10.5 ,they cramped my toes,.Now buying the one size larger xl,they are perfect and will help in my staying healthier ,and prevent problems with my 69 year old feet
Date published: 2013-12-31
Rated 4 out of 5 by from Great socks I bought them a week ago and used them that weekend at a 6 hr race. Tight enough around the ankles mid calves. Only getting 4 stars because I would like them to be a little longer. Great feel.
Date published: 2014-05-19
Rated 5 out of 5 by from Buy them!! I bought two pair of these socks and truthfully they are the most comfortable cycling socks I have worn.  I intend to get more.
Date published: 2014-01-22
Rated 5 out of 5 by from Best socks ever! These socks make you forget you've been in your feet for hours! So comfortable and supportive!
Date published: 2015-01-11
Rated 5 out of 5 by from Great fit and comfort I bought these socks for a 205 mile bike ride. I could tell they really helped.
Date published: 2016-07-26
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