Massdrop x Fitsok Spectra Running Socks (2-Pack)search
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Massdrop x Fitsok Spectra Running Socks (2-Pack)

Massdrop x Fitsok Spectra Running Socks (2-Pack)

(13 reviews)
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The First Running Socks With Spectra

Finally, a pair of running socks that won’t wear out. They have a superpower: a blend of merino wool and Spectra fiber, whose durability, comfort, flexibility, and light weight are unmatched in the world of performance fibers. Fifteen times stronger than steel with a remarkably high abrasion resistance and tear strength, Spectra is used in bulletproof apparel for military and law enforcement. Still, the yarns are so light that they float on water and don’t absorb moisture, which means they’ll stay light and comfortable even when you sweat. Finally, Spectra is naturally cool to the touch and pulls heat away from the body during long runs. Add merino wool’s incredible natural properties, plus strategically placed compression and cushion zones, and you’ve got a pair of socks that’ll outperform all others.

Note: This item is in stock and will ship in 1  business day. Your payment method will be charged 2 hours after joining. Cancellations are accepted until that time. The drop will launch and end each day to collect purchases. 

At checkout, you’ll have your choice of size from unisex S to XXL. 

Materials & Construction

These socks feature Spectra yarns in high-abrasion areas, balanced by soft, functional merino yarns. Merino wool is naturally thermoregulating, which means it keeps you warm in cold weather and cool in warm weather, and prevents overheating and clamminess by absorbing and releasing vapor. Plus, it’s naturally antibacterial and odor-resistant, so you can stretch an extra day out of your pair when you need to. The addition of nylon on the sock body takes the durability up a notch. Targeted cushion zones at the heel, toe, and forefoot provide support where you need it, while the lighter mesh weave on the top improves breathability and fit. Finally, the arch compression creates a secure fit that keeps the sock in place and improves comfort. 

Made in North Carolina

The Sock Factory—a premier performance sock manufacturer in North America—took root in 1975 when founder Michael Banks Sr. bought a couple of dye tubs and a dryer from his father. What started as a small operation quickly grew much larger, now employing a team of more than 50, many of whom have been on staff for 15 years or more. Founded in 2007 and acquired by The Sock Factory in 2016, Fitsok focuses on engineered fit and performance socks made in the US. Still based in Hickory, North Carolina, the family-run business prides itself on quality footwear and top-tier customer service. Any pair of socks that doesn’t meet its strict standards is donated to local homeless shelters and nonprofit organizations.

Sizing Chart


  • Massdrop x Fitsok
  • Color: Gail gray/white
  • Overall fiber content: 60% nylon, 13% Spectra, 12% merino wool, 12% polypropylene, 3% spandex
  • Heel, toe, and forefoot: Spectra, merino wool, polypropylene
  • Sock body: Nylon, spandex
  • Low-cut height
  • Compression arch support
  • Lighter mesh weave at top of foot
  • Cushion at heel, toe, and forefoot
  • Weight per pair, unisex L: 1.1 oz (33 g)
  • Made in North Carolina, USA



All orders will be shipped by Massdrop.

Estimated ship date is Dec 14, 2018 PT.

Your payment method will be charged 2 hours after purchase. Cancellations are accepted until that time, after which the request will be submitted to vendors to deliver the best delivery time to members, making all sales final. Be sure to check the discussion page for updates.

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