{"product_id":"heavyweight-mens-wool-bottom-base-layer-100-merino-wool","title":"Heavyweight Men's Wool Bottom Base Layer - 100% Merino Wool","description":"\u003cp\u003e\u003cstrong\u003eHeavyweight Merino Warmth for Deep-Cold Adventures: The Men’s Wool Bottom Base Layer\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen temperatures fall far enough that ordinary thermals aren't cutting it, the Katmai Heavyweight Men’s Wool Bottom Base Layer provides serious insulation without sacrificing the natural comfort of merino wool. Made from 100% Australian merino in a substantial 400 g\/m² interlock knit, these thermal bottoms are designed for cold-weather hunting, winter camping, hiking, snowsports, and long days outside in freezing conditions.\u003c\/p\u003e\n\u003cp\u003eFine 18.5-micron fibers keep the heavyweight fabric comfortable against the skin, while a gusseted construction, flatlock seams, and ribbed ankle cuffs make the Katmai easy to wear beneath additional winter layers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThoughtful Design \u0026amp; Materials\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100% Merino Wool: Made entirely from Australian merino wool for natural warmth, breathability, moisture management, and odor resistance.\u003c\/p\u003e\n\u003cp\u003eHeavyweight Interlock Knit: The substantial 400 g\/m² fabric provides significantly more insulation than lightweight and midweight base layers for serious cold-weather use.\u003c\/p\u003e\n\u003cp\u003eFine 18.5-Micron Fibers: Fine merino fibers create a soft next-to-skin feel despite the garment's heavyweight construction.\u003c\/p\u003e\n\u003cp\u003eUPF 50+ Protection: The dense merino fabric provides substantial ultraviolet protection during exposed winter adventures.\u003c\/p\u003e\n\u003cp\u003eEasy-Care Construction: Machine washable and tumble-dry compatible for practical care after long days outdoors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Serious Cold\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHeavyweight Insulation: Designed for fall and winter conditions where maintaining body heat becomes a priority.\u003c\/p\u003e\n\u003cp\u003eDeep-Cold Performance: Recommended for temperatures of 0°F and below during active use and approximately 0°F to 30°F during less active periods.\u003c\/p\u003e\n\u003cp\u003eNatural Temperature Regulation: Merino wool helps retain warmth in cold conditions while allowing excess heat and moisture to escape when your activity level increases.\u003c\/p\u003e\n\u003cp\u003eInsulates When Damp: Wool continues providing insulation when exposed to moisture, an important advantage during snowy conditions and high-output winter activities.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for Comfortable Layering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMid-Rise Waist: The waistband sits slightly below the belly button for comfortable coverage beneath additional layers.\u003c\/p\u003e\n\u003cp\u003eMerino-Covered Waistband: Places soft merino wool against your skin instead of leaving elastic directly exposed.\u003c\/p\u003e\n\u003cp\u003eRibbed Ankle Cuffs: Help keep the legs securely positioned while pulling socks, boots, snow pants, or other layers over the top.\u003c\/p\u003e\n\u003cp\u003eRegular Fit: Provides a standard fit with enough room for comfortable movement without becoming excessively loose beneath outerwear.\u003c\/p\u003e\n\u003cp\u003eTrue-to-Size Design: Intended to provide the manufacturer's standard regular fit in your usual size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade to Move Outdoors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGusseted Construction: Reduces stress through the crotch while providing greater freedom of movement for hiking, climbing, skiing, and other active pursuits.\u003c\/p\u003e\n\u003cp\u003eFlatlock Seams: Smooth seams help minimize rubbing and chafing during extended activity.\u003c\/p\u003e\n\u003cp\u003eBase-Layer Design: Wear directly against the skin beneath insulating pants, hunting gear, ski clothing, or weather-resistant outer layers.\u003c\/p\u003e\n\u003cp\u003eSoft Next-to-Skin Feel: Fine merino fibers make the Katmai comfortable enough for extended wear during long winter days and overnight adventures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Merino Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMoisture Management: Merino fibers absorb moisture vapor from your skin and release it into the surrounding air, helping manage the environment inside your layering system.\u003c\/p\u003e\n\u003cp\u003eNaturally Odor Resistant: Merino wool helps resist odor-causing bacteria, a valuable advantage for hunters, backpackers, and anyone wearing the same base layers for multiple days.\u003c\/p\u003e\n\u003cp\u003eBreathable Warmth: Despite its substantial insulation, merino remains naturally breathable to help prevent excessive heat and moisture buildup.\u003c\/p\u003e\n\u003cp\u003eMulti-Day Performance: The combination of warmth, moisture management, and natural odor resistance makes the Katmai particularly useful for extended cold-weather trips.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProduct Type: Men’s Heavyweight Merino Wool Base Layer Bottom\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFiber Content: 100% Merino Wool\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWool Source: Australia\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKnit: 400 g\/m² Heavyweight Interlock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFiber Diameter: 18.5 Microns\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUPF Rating: 50+\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRise: Mid Rise\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaistband: Merino Covered\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGusset: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAnkle Cuffs: Ribbed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeams: Flatlock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLayer Type: Base Layer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFit: Regular\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSizing: Runs True to Size\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 14.4 oz \/ 408 g, Size Large\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStyle #: 709\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImported\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest Suited For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWinter camping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCold-weather hiking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHunting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBackpacking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSkiing and snowboarding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIce fishing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSnowsports\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCold-weather outdoor work\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEveryday winter wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDeep-cold layering systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature Recommendations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eActive Use: Approximately 0°F and below\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInactive Use: Approximately 0°F to 30°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eActual comfort will vary depending on activity level, additional layers, wind, weather conditions, and individual temperature tolerance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare Instructions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTurn inside out before washing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMachine wash cold on gentle cycle with like colors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse mild or wool-specific detergent\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTumble dry on low heat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not use fabric softener\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not use bleach\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStore in an airtight container during extended periods of non-use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eA Serious Base Layer for Serious Winter Conditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Katmai Heavyweight Men’s Wool Bottom Base Layer is built for the days when staying warm requires more than an ordinary pair of long johns. Its dense 400 g\/m² merino construction provides substantial insulation while still offering the breathability, moisture management, and natural odor resistance that make wool so valuable outdoors. Comfortable enough to wear all day and warm enough for deep-winter conditions, the Katmai creates a dependable foundation for your coldest adventures.\u003c\/p\u003e","brand":"Minus33 Merino Wool Clothing","offers":[{"title":"Black \/ Regular \/ XS","offer_id":48646659735793,"sku":"709XS","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ S","offer_id":48646659768561,"sku":"709S","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ M","offer_id":48646659801329,"sku":"709M","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ L","offer_id":48646659834097,"sku":"709L","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ XL","offer_id":48646659866865,"sku":"709XL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ 2XL","offer_id":48646659899633,"sku":"709XXL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ 3XL","offer_id":48646659932401,"sku":"709XXXL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Regular \/ 4XL","offer_id":48646659965169,"sku":"7094X","price":164.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Tall \/ M","offer_id":48646659997937,"sku":"709MT","price":164.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Tall \/ L","offer_id":48646660030705,"sku":"709LT","price":164.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ Tall \/ XL","offer_id":48646660063473,"sku":"709XLT","price":164.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Tall \/ 2XL","offer_id":48646660096241,"sku":"7092XT","price":164.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Tall \/ 3XL","offer_id":48646660129009,"sku":"7093XT","price":164.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Regular \/ S","offer_id":48646660161777,"sku":"709NVS","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Regular \/ M","offer_id":48646660194545,"sku":"709NVM","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Regular \/ L","offer_id":48646660227313,"sku":"709NVL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Regular \/ XL","offer_id":48646660260081,"sku":"709NVXL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Regular \/ 2XL","offer_id":48646660292849,"sku":"709NVXXL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Olive Drab Green \/ Regular \/ S","offer_id":48646660325617,"sku":"709ODS","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Olive Drab Green \/ Regular \/ M","offer_id":48646660358385,"sku":"709ODM","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Olive Drab Green \/ Regular \/ L","offer_id":48646660391153,"sku":"709ODL","price":149.99,"currency_code":"USD","in_stock":false},{"title":"Olive Drab Green \/ Regular \/ XL","offer_id":48646660423921,"sku":"709ODXL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Olive Drab Green \/ Regular \/ 2XL","offer_id":48646660456689,"sku":"709ODXXL","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/7567\/2305\/files\/709NV-1_9d3f441f-e9f1-424b-a1fb-2c23d956c108.jpg?v=1787690098","url":"https:\/\/www.wildsummitco.com\/products\/heavyweight-mens-wool-bottom-base-layer-100-merino-wool","provider":"Wild Summit Co.","version":"1.0","type":"link"}