Castile Light Ultra-Lightweight Crew Liner Black Medium - Fox River® Socks
Castile Light Ultra-Lightweight Crew Liner Charcoal Medium - Fox River® Socks
Castile Light Ultra-Lightweight Crew Liner Natural Medium - Fox River® Socks

Castile Light Ultra-Lightweight Crew Liner

Regular price$ 13.00
Shipping calculated at checkout.

  • Free Domestic Shipping
  • In stock, ready to ship
  • Inventory on the way

Buy 2 pairs of socks take 10% off, Buy 3 take 15% off, Buy 4 take 20% off!

Style #4011

These ultra-lightweight liners hold in heat with soft, natural Merino wool. Merino moves moisture away naturally and is itch-free. The reinforced heel and toe add longer sock life and a smooth, flat toe seam adds comfort.

  • Reinforced toe and heel add durability and longer sock life
  • Smooth, flat comfort toe seam
  • 65% Merino wool, 34% nylon, 1% spandex
Handwear Size Guide

How should I take care of my new favorite Fox River items?

SOCKS - Machine wash warm, inside out. Do not bleach. Tumble dry on low. Do not iron. Do not dry clean. Note: Care Instructions are listed on each product page and on every package.

HANDWEAR - Hand wash, warm with mild detergent or soap. Gentle hand wring. Dry flat.

Free shipping, with minimum order value $35.00 (after discounts), is currently available to customers through economy shipping service only. This excludes bulk orders. The ship-to address must be in the contiguous United States. If you have eligible products in your cart, and have met the minimum threshold of $35.00 (after discounts), those will be shipped for free.

We Believe in Our Socks


At Fox River, we are serious about delivering the highest-quality products for our customer. Simply stated, if you are not satisfied with the quality of our product, we will provide a replacement.

Who We Are

Fox River is a leading U.S. manufacturer of outdoor, sport and lifestyle performance socks since 1900. Fox River is privately owned and operates a hosiery mill in Osage, Iowa at the heart of the country. The central location of the mill helps Fox River offer quick, convenient deliveries across the country and around the globe. Fox River’s premium and performance socks are manufactured at its Iowa headquarters by 200 of the friendliest, hard-working folks you’ll ever meet. Fox River socks have been made in the USA since 1900 utilizing US and imported yarns. We're committed to remaining American-made.

Our Commitment

The Fox River brand is known for its commitment to innovative sock construction and continuous attention to trends in the marketplace. Notably, the brand introduced its signature Wick Dry® moisture management technology in 1985 to help keep feet dry and reduce the moisture build-up that can lead to hot spots and blisters. In 2000, Fox River launched the industry’s first women’s specific-fit performance sock line with smaller toe boxes and heel pockets to better fit women’s feet.

Customer Reviews

Based on 15 reviews
myra howland

I just love you socks ,I always went to the sale at the fairgrounds,but I moved to MS

James Forney

Great sox

Excellent Merino Wool blend socks

I bought about 20 pair of these socks roughly 10 years ago. They're just starting to wear out, so I've just bought another dozen. I love their feel and durability. I use them year-round.

Ryan Meyerhofer

Great buy

David Dockwell
Most comfortable socks ever

These socks have the most cushion in them for being so lite, it’s like having a extra layer of shoe inserts to walk around on...