Smartwool Mens Classic Thermal Merino Base Layer Bottom

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  "title": "Smartwool Mens Classic Thermal Merino Base Layer Bottom",
  "title_original": "Smartwool Men's Classic Thermal Merino Base Layer Bottom",
  "brand": "Smartwool",
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  "bullets": [
    "100% Merino Wool",
    "Made in the USA",
    "COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering.",
    "SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5\"",
    "CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry.",
    "FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and moisture-wicking while flatlock seams minimize chafing for greater comfort.",
    "GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity."
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  "specs": {
    "Item Package Dimensions L x W x H": "‎10.28 x 8.19 x 1.46 inches",
    "Package Weight": "‎0.24 Kilograms",
    "Item Dimensions LxWxH": "‎4 x 4 x 2 inches",
    "Brand Name": "‎Smartwool",
    "Model Name": "‎Classic",
    "Color": "‎Black",
    "Material": "‎Wool",
    "Suggested Users": "‎mens, unisex-adult",
    "Number of Items": "‎1",
    "Manufacturer": "‎Smartwool",
    "Part Number": "‎SW016361001",
    "Style": "‎Merino 250 Base Layer Bottoms",
    "Size": "‎X-Small",
    "Sport Type": "‎Hiking",
    "ASIN": "B08BDCBHQ7",
    "Customer Reviews": "4.7 4.7 out of 5 stars (574) 4.7 out of 5 stars",
    "Best Sellers Rank": "#134,226 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #59 in Men's Base Layers",
    "Date First Available": "June 17, 2020"
  },
  "category": "Clothing, Shoes & Jewelry > Men > Clothing > Active > Active Base Layers",
  "category_path": [
    "Clothing, Shoes & Jewelry",
    "Men",
    "Clothing",
    "Active",
    "Active Base Layers"
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  "category_slug": "clothing-shoes-jewelry/men/clothing/active/active-base-layers",
  "category_leaf": "Active Base Layers",
  "variations": {
    "sizes": [
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      "6.5",
      "7",
      "7.5",
      "8",
      "8.5",
      "9",
      "9.5",
      "10",
      "10.5",
      "11",
      "11.5",
      "12",
      "13"
    ],
    "colors": [],
    "size_chart": {
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      "href": "javascript:void(0)",
      "html": "<table class=\"a-bordered a-size-base\" id=\"fit-sizechartv2-0-table-0\"><tr><th>Brand Size</th><th>Waist (in)</th><th>Hip (in)</th><th>Inseam (in)</th></tr><tr><th>XS</th><td class=\"a-nowrap\">26<span> - </span>28</td><td class=\"a-nowrap\">33<span> - </span>35</td><td class=\"a-nowrap\">29<span> - </span>30</td></tr><tr><th>S</th><td class=\"a-nowrap\">29<span> - </span>31</td><td class=\"a-nowrap\">36<span> - </span>38</td><td class=\"a-nowrap\">30<span> - </span>31</td></tr><tr><th>M</th><td class=\"a-nowrap\">32<span> - </span>34</td><td class=\"a-nowrap\">39<span> - </span>41</td><td class=\"a-nowrap\">31<span> - </span>32</td></tr><tr><th>L</th><td class=\"a-nowrap\">35<span> - </span>37</td><td class=\"a-nowrap\">42<span> - </span>44</td><td class=\"a-nowrap\">32<span> - </span>33</td></tr><tr><th>XL</th><td class=\"a-nowrap\">38<span> - </span>40</td><td class=\"a-nowrap\">45<span> - </span>48</td><td class=\"a-nowrap\">33<span> - </span>34</td></tr><tr><th>2XL</th><td class=\"a-nowrap\">41<span> - </span>44</td><td class=\"a-nowrap\">49<span> - </span>51</td><td class=\"a-nowrap\">34<span> - </span>35</td></tr></table>"
    }
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  "reviews": {
    "average_rating": 4.7,
    "customers_say": "Customers find these pants provide excellent warmth, with one mentioning they work well for cold nights on patrol, and appreciate their comfort and quality.",
    "items": [
      {
        "title": "5.0 out of 5 stars Good quality",
        "body": "Good quality and comfortable it keeps me warm in the cold days specially I work outdoors. A bit pricy but I think it’s worth it. Read more",
        "author": "Adam",
        "rating": 5,
        "date": "January 3, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars soooo good soooo warm",
        "body": "i've tried base layers from patagonia, arc'teryx, icebreaker. none of them are as warm or as comfortable as the smartwool. very happy to find XS stock on amazon as it is not available anywhere else. Read more",
        "author": "Tom",
        "rating": 5,
        "date": "February 8, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Worth the $$",
        "body": "So comfortable; looking forward to being in below freezing with these on! Read more",
        "author": "lgh",
        "rating": 5,
        "date": "January 15, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars As described and comfortable",
        "body": "Great. Read more",
        "author": "GL",
        "rating": 5,
        "date": "December 18, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars The feel and warmth",
        "body": "It was a gift. He loved them Read more",
        "author": "Rita Whitmire",
        "rating": 5,
        "date": "February 21, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars It's good",
        "body": "It's good Read more",
        "author": "jeff burghardt",
        "rating": 5,
        "date": "March 9, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Husband lives in them.",
        "body": "Husband lives in them. Read more",
        "author": "Customer",
        "rating": 5,
        "date": "March 1, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "4.0 out of 5 stars Designed for saggy stomach.",
        "body": "Comfortable and warm but be aware that these long johns are designed for the typical out of shape American male with a large beer belly. So if you are fit and trim you will have to roll the waistband to keep it from being saggy across your belly. I wish they had a design for healthy men without saggy stomachs. Read more",
        "author": "R K Amazon",
        "rating": 4,
        "date": "January 20, 2026",
        "verified": true,
        "images": []
      }
    ]
  },
  "short_description": "Product description Smartwool Collection Thermal Base Layer Bottom Buying Options Thermal Base Layer Crew Buying Options Active Boxer Brief Boxed Buying Options Active Brief Boxed Add to Cart Customer Reviews 4.7 out of 5 stars 574 4.7 out of 5 stars 776 4.4 out of 5 stars 288 4.3 out of 5 stars 167 Price — — $40.00 $ 40 . 00 $30.00 $ 30 . 00 Temperature Rating < 25° - 50° < 25° - 50° - - Wool Content 100% 100% 56% 56% Moisture control ✔ ✔ ✔ ✔ Odor-Resistant ✔ ✔ ✔ ✔ Regulates Temperatures ✔ ✔ ✔ ✔.",
  "about_this_item": "Product description Smartwool Collection Thermal Base Layer Bottom Buying Options Thermal Base Layer Crew Buying Options Active Boxer Brief Boxed Buying Options Active Brief Boxed Add to Cart Customer Reviews 4.7 out of 5 stars 574 4.7 out of 5 stars 776 4.4 out of 5 stars 288 4.3 out of 5 stars 167 Price — — $40.00 $ 40 . 00 $30.00 $ 30 . 00 Temperature Rating < 25° - 50° < 25° - 50° - - Wool Content 100% 100% 56% 56% Moisture control ✔ ✔ ✔ ✔ Odor-Resistant ✔ ✔ ✔ ✔ Regulates Temperatures ✔ ✔ ✔ ✔ 100% Merino Wool; Made in the USA; COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering.; SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5\"; CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry. Materials",
  "long_description": "Product description Smartwool Collection Thermal Base Layer Bottom Buying Options Thermal Base Layer Crew Buying Options Active Boxer Brief Boxed Buying Options Active Brief Boxed Add to Cart Customer Reviews 4.7 out of 5 stars 574 4.7 out of 5 stars 776 4.4 out of 5 stars 288 4.3 out of 5 stars 167 Price — — $40.00 $ 40 . 00 $30.00 $ 30 . 00 Temperature Rating < 25° - 50° < 25° - 50° - - Wool Content 100% 100% 56% 56% Moisture control ✔ ✔ ✔ ✔ Odor-Resistant ✔ ✔ ✔ ✔ Regulates Temperatures ✔ ✔ ✔ ✔\n\nHighlights: 100% Merino Wool Made in the USA COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering. SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5\" CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry. FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and moisture-wicking while flatlock seams minimize chafing for greater comfort. GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity.\n\nKey details: Item Package Dimensions L x W x H: ‎10.28 x 8.19 x 1.46 inches | Package Weight: ‎0.24 Kilograms | Item Dimensions LxWxH: ‎4 x 4 x 2 inches | Brand Name: ‎Smartwool | Model Name: ‎Classic | Color: ‎Black | Material: ‎Wool | Suggested Users: ‎mens, unisex-adult | Number of Items: ‎1 | Part Number: ‎SW016361001\n\nMaterials and feel: ‎Wool.\n\nSizes may include: 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 13.\n\nCustomer feedback: 4.7/5 average rating.\n\nCustomers say: Customers find these pants provide excellent warmth, with one mentioning they work well for cold nights on patrol, and appreciate their comfort and quality.\n\nReview snippets: Good quality and comfortable it keeps me warm in the cold days specially I work outdoors. A bit pricy but I think it’s worth it. Read more / i've tried base layers from patagonia, arc'teryx, icebreaker. none of them are as warm or as comfortable as the smartwool. very happy to find XS stock on as it is not available anywhere else. Read more",
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      "text": "Product description Smartwool Collection Thermal Base Layer Bottom Buying Options Thermal Base Layer Crew Buying Options Active Boxer Brief Boxed Buying Options Active Brief Boxed Add to Cart Customer Reviews 4.7 out of 5 stars 574 4.7 out of 5 stars 776 4.4 out of 5 stars 288 4.3 out of 5 stars 167 Price — — $40.00 $ 40 . 00 $30.00 $ 30 . 00 Temperature Rating < 25° - 50° < 25° - 50° - - Wool Content 100% 100% 56% 56% Moisture control ✔ ✔ ✔ ✔ Odor-Resistant ✔ ✔ ✔ ✔ Regulates Temperatures ✔ ✔ ✔ ✔"
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      "text": "Highlights: 100% Merino Wool Made in the USA COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering. SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5\" CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry. FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and moisture-wicking while flatlock seams minimize chafing for greater comfort. GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity."
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      "text": "Customer feedback: 4.7/5 average rating."
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      "text": "Customers say: Customers find these pants provide excellent warmth, with one mentioning they work well for cold nights on patrol, and appreciate their comfort and quality."
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      "text": "Review snippets: Good quality and comfortable it keeps me warm in the cold days specially I work outdoors. A bit pricy but I think it’s worth it. Read more / i've tried base layers from patagonia, arc'teryx, icebreaker. none of them are as warm or as comfortable as the smartwool. very happy to find XS stock on as it is not available anywhere else. Read more"
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