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.
Enter the Merino Wool Challenge Sock - Trail Cuff. Built for short rucks or sandbag workouts in your driveway, 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 are an ideal match with the Mackall All-Terrain Rucking Shoes (trust us, you won’t regret it).
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: 4.867725 / 5 from 756 reviews.
Merino Challenge Socks - Trail Cuff, manufactured in the USA, are praised for their durability, comfort, and performance. They are designed to prevent blisters and keep feet dry and fresh, making them ideal for various activities. The socks feature robust cushioning, extended arch support, and a reinforced toe, all backed by an unconditional lifetime guarantee.
Review topics: [fit, size, weight, issues, quality, color, shipping, length, material, feel, wear, look, comfort, feet, padding, price, thickness, spots, customer service, support, moisture, stability, cotton, value, warranty, design, height, work, sweat, weather].
"No blisters, perfect fit, all around comfort, no regrets at all. Best gear ever! Balance is perfect!"
"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."
"Good - warm feeling socks. The right amount of bulk to fill the shoe but doesn't get under foot. Summer and winter use"