Best purchase ever!!
"No blisters, perfect fit, all around comfort, no regrets at all. Best gear ever! Balance is perfect!"
We put our feet through hell, so our socks must meet the highest standards—no blisters, no friction where the sock meets the shoe.
The Merino Wool Challenge Sock - Ankle was built to take on your toughest workouts. These socks won’t wear thin or lose shape. They’ll keep your feet dry, and even after days of use, they don’t stink. They work great with the Mackall, Ballistic Trainers, and Rough Runner training shoes.
They’re unconditionally backed by our Scars Lifetime Guarantee and proudly made in the USA.
Socks are final sale and not eligible for returns or exchanges.

Overall rating: 4.8678994 / 5 from 757 reviews.
Merino Challenge Socks - Ankle are highly regarded for their exceptional feel, fit, and durability. Customers praise the socks for keeping feet dry and comfortable, with robust cushioning and blister prevention. The socks are made with high-quality materials and are proudly built in the USA, though sizing feedback is mixed.
Review topics: ["size","fit","weight","issues","color","fabric","material","price","quality","feel","shipping","support","design","comfort","grip","length","wear","feet","padding","work","spots","thickness","customer service","look","height","warranty","stability","value","moisture","sweat"].
"No blisters, perfect fit, all around comfort, no regrets at all. Best gear ever! Balance is perfect!"
"Thee best priced item from go ruck, quality is outstanding as always."
"Used these with my MACV-2s while getting ready to go off to basic and OCS for the Army. Very comfortable and impressive for someone like me not having to wash them every time (I am a person who has very sweaty feet). Not sure if it's the MACV-2s not being broken in yet, but I did get some small blisters on the insides of my heels with these socks. With the Merino wool crew socks, they feel much better though."
"I never knew how much of a difference good socks can make. These socks are comfortsble to train and for leisure. On the down side, the order site made me think I was getting some free socks is if I ordered a certain amount, which I thiight I did. As much as I like the equipment I have received, I have learned not to ask about the free socks and just deal with the omission. At least my feet feel good."
"I have rucked a lot in my life, and I started when I was 14. These socks didn't cause my feet to get hot and when paired with the MACV2 boots I had 0 hotspots or blisters. Before this combo I would always have hotspots and occasionally a blister, but this combo defeated that."
"Comfortable socks made in the USA that I was pleased with for the first few weeks of wear. Only issue was within a month, I had thin material at my heel and ball of my foot. Before two months passed, I had holes in my toe box area."
"Love these socks!! Ordered more!!"
"I've used them for HIIT, runs, and logging in waterpoof boots. My feet stay dry and cool. After the first or second wear and wash, they really opened up."
"Best socks I’ve ever worn. Excellent odor and moisture management. Only wear these now. You really can wear these multiple days without odor. Haven’t had cause to use the scars guarantee for these socks, but I have used it on a ruck and they do come through."
"Love the fit and the feel of the Trail Cuff Socks. Perfect pairing with my MACV-1 Hi-Speed Mid-Top boots."