Grundens Boot Sock Thermal

Marsoni

M251S

$29.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Grundens Boot Sock ThermalComfort starts from the inside, out. Naturally insulating, moisture wicking and antimicrobial Merino Wool and Repreve recycled yarns wrap your feet in cushioned comfort. 38% Merino content, the most in the sock line up, boosts the Boot Sock Thermal insulating power for the coldest, longest days on deck. High power instep elastic locks in a blister free fit. Nylon reinforcement yarns at heel and toe boost durability. USA made, sustainably sourced.

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I highly recommend! These are so comfortable! Right out of the box, they can be worn all day. The velcro-adjustable straps are great for making for a perfect fit. The aren't clunky to wear, even though they appear to be. They're super cute, in my opinion. The sock liner is textile, so feet feel good all day, not slimy, like leather and suede can sometimes make feet feel if socks aren't worn.

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Reviewed in the United States on March 17, 2026

Verified Purchase

Pamela

Belleville, US

★★★★★ 5

Cute and Comfortable

Size: 10, Color: Black

This is my second pair. I bought the sand color at my local Macy's. I got their last pair. I have issues with back pain and ankle swelling and pain. These are so comfortable I had to get them in Black. The adjustable straps are great. My feet are a little bit wider because of the swelling issues. So if you have very narrow feet these might be a little big. You might want to go down a half a size. But otherwise I wear a size 10 and they fit perfectly. I don't think the picture does the color justice. The black almost looks like velvet, it's very deep and rich. I wore them out today for the first time and got lots of compliments. The footbed is very comfortable with the memory foam. Lots of support. I noticed my back and ankle pain is much better wearing these. I've never owned UGG before. If these hold up really well and continue to stay comfortable, I will be purchasing other styles for fall and winter.

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Reviewed in the United States on May 1, 2026