Rated 4.8/5 by 35,000+ of Happy Athletes

American-Made Running Socks To Help You Run, Hike, Conquer.

Run blister-free, stay dry, and conquer any trail with Fitsok’s durable, American-made socks.

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Blister-Free Guarantee on Every Run

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Breathable Design for Peak Performance

icon Made for Movement, Built to Last

icon Blister-Free Guarantee on Every Run

Trusted by 35,000+ Passionate Athletes

“Excellent socks - perfect fit - light, strong and very comfortable!”

John L. Reviewing: Pro Trainer (Noir)

The Perfect Fit for Every Adventure.

Whether you run, hike, or simply want to be comfortable, we have the perfect socks for you.

Why Runners Choose Fitsok

Superior Fit

Superior Fit

Fitsok’s socks are engineered for a snug, comfortable fit that adapts to your foot, providing optimal support during every run, whether short or long.

Moisture Control

Moisture Control

Our advanced fabric wicks away sweat and moisture, keeping your feet dry and comfortable, even during intense runs, reducing the risk of blisters.

Cushioning Support

Cushioning Support

With multiple cushioning levels, Fitsok provides tailored support where it matters most—cushioning high-impact areas to prevent soreness and foot fatigue.

Durable Comfort

Durable Comfort

Made with cutting-edge materials in the USA, Fitsok socks are built to last, ensuring lasting comfort and performance through countless runs.

Loved by 35,000+ Passionate Athletes

Trusted by Athletes Everywhere.

Our community speaks for itself—read what they have to say.

Great socks.....I'm on my feet all day and they are very, very comfortable and very durable. Excellent product...

Skip R.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I’ve been a Swiftwick fan for a long time but seeing these tie dye dudes had me wanting to branch out. So I did, and soooo glad I did. These socks are highly comparable if not a bit better than swiftwick socks so I ended up 🤙🏼

Steven E.

Reviewing: Pro Trainer (Noir)

Extremely comfortable and the perfect weight.

David S.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I wear nothing else for fitness than Fit Soks. Best soks ever!

John Doe

Reviewing: CX3 White Low (3 pair pack)

The fitsoks are super comfortable. I wear them for tennis. I have worn other brands, but they make my feet throb.

Sheela P.

Reviewing: CF2 Cushion Gray (3 pair pack)

Love my patriotic socks! Love the colors and design and they are a great fit.

M. Y.

Reviewing: Run Free July SOM

I love these socks! The color, stitching, quality, everything is on point! Was recommended this brand by a friend and he wasn’t wrong. Will be a lifetime customer. Also bought the low no show socks and all are amazing.

Sarah L.

Reviewing: Pro Trainer Running Socks

Great socks.....I'm on my feet all day and they are very, very comfortable and very durable. Excellent product...

Skip R.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I’ve been a Swiftwick fan for a long time but seeing these tie dye dudes had me wanting to branch out. So I did, and soooo glad I did. These socks are highly comparable if not a bit better than swiftwick socks so I ended up 🤙🏼

Steven E.

Reviewing: Pro Trainer (Noir)

Extremely comfortable and the perfect weight.

David S.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I wear nothing else for fitness than Fit Soks. Best soks ever!

John Doe

Reviewing: CX3 White Low (3 pair pack)

The fitsoks are super comfortable. I wear them for tennis. I have worn other brands, but they make my feet throb.

Sheela P.

Reviewing: CF2 Cushion Gray (3 pair pack)

Love my patriotic socks! Love the colors and design and they are a great fit.

M. Y.

Reviewing: Run Free July SOM

I love these socks! The color, stitching, quality, everything is on point! Was recommended this brand by a friend and he wasn’t wrong. Will be a lifetime customer. Also bought the low no show socks and all are amazing.

Sarah L.

Reviewing: Pro Trainer Running Socks

Great socks.....I'm on my feet all day and they are very, very comfortable and very durable. Excellent product...

Skip R.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I’ve been a Swiftwick fan for a long time but seeing these tie dye dudes had me wanting to branch out. So I did, and soooo glad I did. These socks are highly comparable if not a bit better than swiftwick socks so I ended up 🤙🏼

Steven E.

Reviewing: Pro Trainer (Noir)

Extremely comfortable and the perfect weight.

David S.

Reviewing: CF2 Crew Gray (2 Pair Pack)

I wear nothing else for fitness than Fit Soks. Best soks ever!

John Doe

Reviewing: CX3 White Low (3 pair pack)

The fitsoks are super comfortable. I wear them for tennis. I have worn other brands, but they make my feet throb.

Sheela P.

Reviewing: CF2 Cushion Gray (3 pair pack)

Love my patriotic socks! Love the colors and design and they are a great fit.

M. Y.

Reviewing: Run Free July SOM

I love these socks! The color, stitching, quality, everything is on point! Was recommended this brand by a friend and he wasn’t wrong. Will be a lifetime customer. Also bought the low no show socks and all are amazing.

Sarah L.

Reviewing: Pro Trainer Running Socks

I bought my husband these socks in 2015 when he ran his first marathon. My husband still 7 years later wears the same pair of socks. The pair I just purchased are for my son who will participate in his first triathlon.

Laurie R.

Reviewing: F4 Tech (3 pair pack)

Absolutely the best sock. I wear them for every activity. Recommend you do, too.

Tom S.

Reviewing: ISW Isolwool® Trail Cuff (3 pair pack)

Whether running, biking, or walking the dog, best sock ever.

Richard A.

Reviewing: Blue & Yellow Hyper Stripe Crew Runner Socks

I'm a size 11.5 shoe and got a large. It fits great! Wore them for a run already and had not issues.

Cory C.

Reviewing: Pro Blue & Yellow Hyper Stripe Runner Socks

These socks are awesome. Fit well, not too warm, not too cold, and they take the abuse of the washing machine well. I wear them everywhere

Casey P.

Reviewing: ISW Isolwool® Heather No-Show (3 pair pack)

Beautiful sock, very comfortable - it fits snug but it is not uncomfortable.

Rodney T.

Reviewing: Green & Yellow Hyper Stripe Crew Runner Socks

I bought my husband these socks in 2015 when he ran his first marathon. My husband still 7 years later wears the same pair of socks. The pair I just purchased are for my son who will participate in his first triathlon.

Laurie R.

Reviewing: F4 Tech (3 pair pack)

Absolutely the best sock. I wear them for every activity. Recommend you do, too.

Tom S.

Reviewing: ISW Isolwool® Trail Cuff (3 pair pack)

Whether running, biking, or walking the dog, best sock ever.

Richard A.

Reviewing: Blue & Yellow Hyper Stripe Crew Runner Socks

I'm a size 11.5 shoe and got a large. It fits great! Wore them for a run already and had not issues.

Cory C.

Reviewing: Pro Blue & Yellow Hyper Stripe Runner Socks

These socks are awesome. Fit well, not too warm, not too cold, and they take the abuse of the washing machine well. I wear them everywhere

Casey P.

Reviewing: ISW Isolwool® Heather No-Show (3 pair pack)

Beautiful sock, very comfortable - it fits snug but it is not uncomfortable.

Rodney T.

Reviewing: Green & Yellow Hyper Stripe Crew Runner Socks

I bought my husband these socks in 2015 when he ran his first marathon. My husband still 7 years later wears the same pair of socks. The pair I just purchased are for my son who will participate in his first triathlon.

Laurie R.

Reviewing: F4 Tech (3 pair pack)

Absolutely the best sock. I wear them for every activity. Recommend you do, too.

Tom S.

Reviewing: ISW Isolwool® Trail Cuff (3 pair pack)

Whether running, biking, or walking the dog, best sock ever.

Richard A.

Reviewing: Blue & Yellow Hyper Stripe Crew Runner Socks

I'm a size 11.5 shoe and got a large. It fits great! Wore them for a run already and had not issues.

Cory C.

Reviewing: Pro Blue & Yellow Hyper Stripe Runner Socks

These socks are awesome. Fit well, not too warm, not too cold, and they take the abuse of the washing machine well. I wear them everywhere

Casey P.

Reviewing: ISW Isolwool® Heather No-Show (3 pair pack)

Beautiful sock, very comfortable - it fits snug but it is not uncomfortable.

Rodney T.

Reviewing: Green & Yellow Hyper Stripe Crew Runner Socks

The Difference is in the Details.

See why Fitsok outperforms the competition.

Other Running Socks

Sorbtek® moisture-wicking
Targeted compression zones
Blister-free guarantee
Reinforced impact areas
Durability for high-mileage
Designed for recovery support

Step Into a New Level of Comfort and Performance.

Our unique blend of materials and design technology means your feet stay cool, supported, and blister-free, whether you're running your fastest mile or scaling new heights.

Two Brothers, Both Runners.

Founded by two brothers with a passion for running, Fitsok was created to give runners and hikers the gear they deserve.

18th

Year cultivating and building the best running sock brand.

3rd

Generation of innovation, quantity and passion into every pair.

Follow us on Instagram @fitsok