SLS3 FXC Running Socks | Multi-Pack

Regular price $36.00 Sale price $24.00

The FX Run Socks are ideal for everyone from marathon to trail runners. The innovative, airy mesh knit reduces the weight and makes the sock extremely breathable.
The integrated Ankle Pads protect the sensitive ankle area, while the Air channel construction directs fresh air under the soles of your feet.
The special material mix reduces the spread of bacteria and germs as well as odor build-up.


S  Shoe Size M 6-8 / W 7-8

M Shoe Size M 8-9 / W 9-10

L  Shoe Size M 10-11 / W 11-12


You know the unpleasant feeling when a toe constantly bumps up against the shoe. The chances of this while working out is quite high because continuous movement can cause the foot to slide forward in the shoe. To buffer the foot from this pressure the TOE PROTECTOR is made out of a special yarn that cushions and protects the toes.


Our entire body weight is borne by only a small area of the foot. Using the best technology available today, the anatomically shaped footbed aligned to “R”- right and “L”- left foot, protects and supports this high stress area, the sole of foot. The Air Channels are designed to regulate heat and moisture.


Our innovative Achilles Tendon Protector prevents strain on the sensitive Achilles tendon due to the surrounding cushion. This shock absorbing cushion serves as a buffer between the foot and shoe to prevent pressure and friction.


Our ventilation system insures that large areas of the foot are supplied with fresh air which regulates the heat and moisture, keeping your feet cool and dry.


The ankle is often scraped up during a fall due to the nature of its shape. To protect the exposed ankle, we developed a special performance padding. The alignment of the ankle pads offers perfect protection without affecting the ventilation ability of the Air Channels.


All of our SLS3 garments are created with great care, attention to details and passion. In order to maximize the life span and performance of your garment, we encourage you to consider our recommended care instructions.


Make sure all pockets are empty and the zipper is fully closed prior washing. Turn garment inside out. Avoid washing your garment alongside items with velcro, snaps, or rough fabric that can be abrasive.


Use mild detergent or soap designated for fine or delicate washables. Do NOT use fabric BLEACH or fabric SOFTENERS! Always avoid using fabric softeners with performance fabrics as the softeners may inhibit your garment’s wicking abilities.


Keep your colors bright and sharp by washing your garment alone or with similarly colored items in cold water and hang to air dry. Air-drying protects the lifespan of your garment’s elastic fibers and helps maintain the overall shape and performance properties.


This garment is NOT intended for extended use in chlorinated pools - chlorine is bleach and will destroy the Lycra/Spandex fibers in your garment! Remember to thoroughly rinse your garment after every use.


For more information on how to care for your SLS3 garment, please contact us or call us at 707.893.SLS3 (7573) we are here to assist you.

Same Day Shipping - Order Today!

97% of our orders will ship the same day when you order before 2PM PST (5PM EST). 

There's no extra cost.  



We hope you love your SLS3 Sportswear! But if for any reason you are unhappy with your purchase, simply mail off your return within 60 days of receiving your item and we will be happy to offer you a refund. Exchanges can also be made.

NO RMA is required.

Please send returns/Exchanges within 60 days of receiving item to:


Attn: Returns/Exchanges

1714 Ord Way

Oceanside, CA 92056




Please Include the INVOICE SHEET that came with your order and note the instructions below

  • Returns/Exchanges can only be made within 60 days from the date of receipt of your item. Please mail to the Return Address that is on the attached label of the invoice. 
  • The customer is responsible for any return shipping costs and for obtaining tracking information as SLS3 is not responsible for any lost/missing returns.
  • Once we receive your returned item, we will refund you the purchased amount and send you an email to confirm that the return has been completed. Refunds are in the form of original payment, please allow up to 10 business day for the refund to be reflected in your account or your exchange to be sent out. We don't refund original shipping charges.
  • All SLS3 items must be returned unworn, unwashed, with original tags still attached, stickers, folded in its original garment bag.


Please ensure the return order is well packaged and protected from damage in transit.


100% Performance Bliss

We want you to love your gear as much as we do. 
To enjoy the form and function of your SLS3 garments for as long as possible, please observe the care instructions given for 
each garment. All of our products come with a minimum 180-day performance bliss warranty.

For any questions feel free to contact us at or 707.893.7573

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