• Online:
  • URL for this product:
  • From the U.S. and CanadaCall 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • InternationalCall 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.


    SmartWool Lightweight Boot Top Long Underwear Bottoms - Men's

    Cut short for footwear with high cuffs such as ski boots or winter hikers, the men's SmartWool Lightweight Boot Top long underwear bottoms enhance comfort during activities in cool weather.

    • $80.00

    Item # 855540

    REI Members get back an estimated $ 8.00 on this item as part of their annual member refund.

    The REI Member Dividend

    The REI dividend is a unique benefit of membership in the REI co-op. It's comprised of your member refund—typically 10% back on eligible purchases—and/or your REI Visa® card rebates.

    Each March, active REI members and REI Visa cardholders who earned a rebate receive a refund in the form of an annual dividend notice.

    Only active members receive annual dividend notices. To maintain your active status as an REI member, you need to make net merchandise or shipping purchases of at least $10 per year, unless you joined that year. Member numbers are issued in one name and only that person receives the member refund. Your number can be used by others in your family, but it cannot be transferred to someone else.

    Questions? Call us at 1-800-426-4840 for more about your dividend or its redemption.

    Learn more

    Product size and color
    • 100% Satisfaction Guaranteed
    • Gear and Advice You Can Trust

    This item ships for free! Learn more

    To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.

    • Lightweight merino wool helps maintain a comfortable temperature by wicking moisture away from skin, drying quickly and offering light insulation
    • Fabric protects skin from harsh UV light with a UPF rating of 35
    • Unlike traditional wool, SmartWool items do not itch and can be repeatedly washed and dried without shrinking
    • Chafe-free flatlock seams enhance comfort during activity
    • Stretchy bottom hems are reinforced for durability
    • Functional fly with colored bar tacks at opening; elastic waistband
    • The formfitting SmartWool Lightweight Boot Top long underwear bottoms for men offer a minimalist fit and a natural rise


    Item 855540

    REI Membership

    SmartWool Lightweight Boot Top Long Underwear Bottoms - Men's Specs
    Best use
    Wool / wool blend
    Merino wool
    20.5 inches
    Fabric type
    Sun-protective fabric
    Moisture wicking
    Quick drying
    Underwear weight
    Inseam (in.)

    SmartWool Lightweight Boot Top Long Underwear Bottoms - Men's

    Loading Ratings & Reviews...

    Rated 2.5/5 based on 2 reviews
    Rated 1out of5
    by fromPoor quality Holes formed in the material after wearing the underwear once--some were near the waist, but others wear near the thigh area. Additionally, I was hoping that the lighterweight material would make for a good baselayer while active in the cold, but instead I found that it was too thin to provide insulation.
    Date published: 2013-12-16
    Rated 4out of5
    by fromGreat product, legs too short! I tend to run a bit warm blooded and so only use these during the winter. I'm a little on the stout side and chose to get the boot height because I was afraid the full length would be too long. That was a mistake. These tend to ride up to just under my knees, which causes my calves and shins to be air cooled. It feels really odd... I love the feel and the warmth they provide on the parts they cover.
    Date published: 2013-12-01

    Ask a question and have it answered by REI product experts and fellow outdoor enthusiasts. Need immediate assistance? Use Live Help.

    Loading Questions & Answers...

    How are we doing? Give us feedback on this page.

        FREE SHIPPING With $50 minimum purchase

        Buy More, Save More! Thru July 18, save up to AN EXTRA 35% on REI-OUTLET gear & clothing!  Details & Exclusions
        • Join REI today!
        • REI Membership
        • REI member benefits include an annual refund (typically 10% on eligible purchases).
        • Join REI today!
        • Sign up for REI Gearmail®
        • and get 15% off selected items!
        • Store Locator
        • Locate an REI store near you.
        • Find a Store
        © 2014 Recreational Equipment, Inc. All rights reserved. REI, the REI Tree and Mountain design, Novara, and
        REI Adventures are trademarks of Recreational Equipment, Inc.

        Find REI on: FacebookTwitterYouTubeFlickrMobile site