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    Castelli Merino 9 Wool Socks Review
    Gear Reviews

    The Cozy Castelli Merino 9 Wool Socks

    Jason MitchellBy Jason MitchellNovember 10, 2017No Comments3 Mins Read

    Merino wool is the bee’s knees in my book. I do my best to wear it daily and on the bike, I’ve found that I love Merino wool socks. Castelli has their own version of Italian woolies and they are good.

    Castelli Merino 9 Wool Socks Features:

    • Merino wool blend
    • Mid-length protection with 9cm cuff
    • Midweight thickness
    • MSRP: $16.99
    Castelli Merino 9 Wool Socks Review
    The Merino 9’s are comfy and cozy on cold rides.

    Ba-a-a-a-a means comfort in Italian (I think)

    When heading out on cold rides, nothing beats the cozy comfort of Merino wool socks. The softness of the natural fibers and inherent warmth is unsurpassed by anything 100% man-made. I’m not going to pretend that these are 100% wool because those would fall apart like an AMC Gremlin, but the key is in the blend. It’s the proper mixture of materials that maximizes the good qualities of Merino and makes for a durable, warm sock.

    I’ve been wearing these on my fall road and mountain bike rides. On the mountain bike, I’ve found them to keep my feet warm in my Specialized Expert XC MTB shoes down into the upper-30’s without shoe covers. On the road side, I’ve worn them with my Bontrager Velocis road shoes into the upper-40’s without shoe covers. That added warmth really makes the ride and not wearing shoe covers is one less thing to have to deal with when getting kitted up.

    Castelli Merino 9 Wool Socks Review
    The aftermath — some seriously dusty wool socks.

    Where the Castelli Merino 9 socks will find a great sweet spot is for cyclocross. Those attacking the barriers will love the warmth on the bike and when running uphill, through sand and over barriers.

    Construction of the Merino 9’s includes varied thicknesses and weave to maximize warmth, protection, comfort and breathability. Seams go unnoticed and my sharp, pointy big toes have done nothing to damage them so far.

    Castelli Merino 9 Wool Socks Review
    Road or MTB, the Merino 9’s have added warmth on cold mornings.

    I wish the cuff height were a little taller, to be honest. When wearing them with shoe covers, they don’t quite cover the upper cuff, which is a tad uncomfortable. On the bright side, they stay stink-free even after repeated use. I have gone several weeks without washing them (do I admit that?). And, speaking of washing, my family of 6 is not consistent at following care instructions. These made it in a normal load and came out just dandy.

    The Good

    • Added warmth in cold temperatures
    • Soft and comfortable
    • Stay stink-free for repeated usage

    The Bad

    • Cuff could be taller

    The Bottom Line: Castelli Merino 9 Wool Socks

    Merino Wool has been a wonder material for centuries and modern twists on the stuff are only getting better. The blend chosen for the Castelli Merino 9 wool socks is spot-on for comfort and warmth.

    Buy Now: Available at CompetitiveCyclist.com

    castelli Merino socks
    Jason Mitchell
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    A native of the Pacific Northwest, Jason quickly developed a love for the outdoors and a thing for mountains. That infatuation continues as he founded this site in 1999 -- sharing his love of road biking, mountain biking, trail running and skiing. With extreme attention to detail, he has been a technical product manager for top 10 web properties, eCommerce businesses and SaaS companies for 20+ years. The combination of outdoor experience and technical savvy gives him a unique perspective that is channeled into every gear review. Utah's Wasatch Mountains are his playground. He rigorously tests every product and usually uses them beyond their intended purpose -- just for the sake of testing. (Note: Jason receives sample products in exchange for authentic reviews. He is not paid, nor influenced to share anything other than his honest opinions.)

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