Performance socks for all athletes

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The 3-pack redefined


At Fitsok we think there’s a better way to engineer a better sock. As runners ourselves, we know the importance of having multiple fresh socks ready to go, day after day. It’s part of our philosophy to keep athletes running dry, comfortable and cool. We’ve loaded each model with tons of tech and then tested them for hundreds of miles.
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Why choose Fitsok?

Advanced fabrics

From our own Shadowyarn to Sorbtek® nylons, Coolmax® and Isolwool®, we’re serious about technical fibers and fabrics.

Max arch support

Keeps the sock snug, reducing friction and heat around the middle of the foot.

Precision toe

No bunching here. A clean, smooth toe provides a contoured fit without irritation.

Flowtek channels

Innovative channels move heat and moisture away from the bottom of your foot.

Engineered heel

Our design reinforces the shape of the heel. No slippin’ down. No slidin’ up.

Anatomical design

Our F4 Tech sock employs Left/Right foot engineering for a precise fit.

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