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Swiftwick Seven Sustain Socks

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Item # SWF000D

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Item # SWF000D

Sustain your comfort level.

With seven-inch cuffs providing maximum coverage and lower leg support, the new Swiftwick Seven Sustain Socks have you covered for all of your training rides and races. They're made from recycled materials, which serve to represent Swiftwick's carbon neutral philosophy and commitment to conserving and recycling.

The socks were made from REPREVE, which is a post-industrial recycled nylon. In fact, as part of Swiftwick's line of socks that are created from this post-industrial recycled nylon, the Zeros were made to represent Swiftwick's carbon neutral philosophy and commitment to conserving and recycling. The socks were manufactured in Tennessee in Swiftwick's own factory, where its employees oversee every step of the process. Like the Olefin used in Swiftwick's synthetic collection, REPREVE wicks exceptionally well and is also hydrophobic, meaning that it will not absorb water. So, you'll stay dry and comfortable since the socks move with your feet and minimize (or eliminate) abrasion against your skin.

The Zero Sustain socks were created by a 200-needle machine process that yields a high density, seamless knit fabric. The cushioned footbed gives way to the thin-channeled upper -- both components playing a crucial role in providing overall comfort. The arch band provides support in the midfoot, and the Y-shaped heel contour assures that you won't experience any bunching or that overstretched feeling in the back.

Several knitting patterns in the footbed and cuff give the Sustain Socks a compressive nature that promotes blood flow in the feet. This then leads to improved vascular performance, resulting in reduced fatigue and a speedier recovery.

The Swiftwick Seven Sustain Socks are available in four sizes from Small to X-Large and in the colors Black and White.

  • Repreve post-industrial nylon (recycled)
  • Compressive seven-inch cuff
  • Cushioned footbed
  • Arch support band
  • Y-heel contour

Tech Specs

post-industrial recycled nylon
7 in crew
Recommended Use:
Manufacturer Warranty:

Size chart



Swiftwick Socks
US Men's 3-5.5 6-9.5 10-13 13.5-16
US Women's 5-7.5 8-10 10.5-14 14.5-16.5
Euro 35-38 39-42 43-46 47-49
How to Measure:
For best results, take measurements over your underwear.

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Here's what others have to say...

5 5

Sweet socks

  • Familiarity: I've put it through the wringer
  • Fit: True to size

These socks are great. I used them during my big rides, they are very comfy to wear. i would definitely recommend these socks if you plan to go on a big bike ride.

5 5

Very good socks.

  • Familiarity: I've put it through the wringer
  • Fit: True to size

I picked these up on a great sale somewhere else and I really enjoy them. The 7 length is mid calf, just below my calf muscle. Super swiftwick comfort, and they're pretty much indestructible. I wear these as dress socks sometimes. Size 10.5 US Mens and the medium is perfect.