{"id":212966,"date":"2026-09-25T02:36:30","date_gmt":"2026-09-24T23:36:30","guid":{"rendered":"https:\/\/www.um5.ee\/?post_type=product&p=212966"},"modified":"2026-09-25T08:03:19","modified_gmt":"2026-09-25T05:03:19","slug":"hw-norwin-merino-wool-thermal-underwear-shirt","status":"publish","type":"product","link":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/","title":{"rendered":"HW Norwin Merino Wool Thermal Underwear Shirt"},"content":{"rendered":"<p><strong>HW Norwin<\/strong> functional thermal underwear shirt is a warm, breathable, and moisture-wicking base layer shirt that combines the natural properties of merino wool with the practicality of performance polyester. The double-layered material is designed to help maintain a comfortable climate around the body both in cold weather and during active movement. Therefore, it is perfectly suitable not only under workwear but also for hiking, skiing, winter walks, sports, and other active activities. The shirt&#8217;s material&nbsp;consists of 40% merino wool and 60% performance polyester, and the fabric weight is 220 g\/m\u00b2.&nbsp;Moisture management is especially important during active activities. When the body starts to sweat during physical exertion, the functional base layer helps to wick moisture away from the skin. This way, the wet fabric does not stay against the body for a long time, and dressing remains more comfortable even with changing activity levels. <strong>The advantage of merino wool is its ability to retain warmth even when wet<\/strong>.<\/p>\n<p><strong>Natural benefits of merino wool<\/strong><br \/>\nMerino wool differs from ordinary coarser lamb&#8217;s wool due to its very fine fibers. Thanks to this, the material is soft and pleasant against the skin and does not cause the prickly sensation often associated with conventional wool. This is especially important for underwear worn directly against the skin.&nbsp;Merino wool also has natural odor-reducing properties, which keeps the garment fresh for longer. It is not always necessary to wash the shirt immediately after a single wear \u2013 after lighter use, a few hours of airing may be enough to refresh it. This property is particularly practical for hiking, traveling, or multi-day outdoor work.<\/p>\n<ul>\n<li>Functional warm underwear<\/li>\n<li>40% merino wool \/ 60% performance polyester<\/li>\n<li>Material weight 220 g\/m\u00b2<\/li>\n<li>Merino wool helps maintain and regulate body heat<\/li>\n<li>Wicks moisture away from the body<\/li>\n<li>Retains warmth even when wet<\/li>\n<li>Highly breathable material<\/li>\n<li>Soft and comfortable merino wool against the skin<\/li>\n<li>Does not cause the prickly sensation typical of coarse wool<\/li>\n<li>Natural properties of merino wool help reduce unpleasant odors<\/li>\n<li>Suitable for active movement and prolonged wear<\/li>\n<li>Good first layer for cold weather clothing<\/li>\n<li>Suitable for work, sports, and leisure activities<\/li>\n<li>Machine washable up to 40 \u00b0C<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.um5.ee\/toode\/hw-norwin-meriinovillaga-soe-pesu-puksid\/\">Also see Norwin thermal underwear pants<\/a><\/p>\n<p><strong>Why choose the HW Norwin thermal underwear shirt?<\/strong><br \/>\nNorwin&#8217;s strength is that it is not just a thick winter base layer shirt. Its purpose is to combine warmth, breathability, and moisture management so that the shirt works with the wearer even during physically active activities.&nbsp;40% merino wool helps retain warmth, regulate body temperature, and reduce unpleasant odors. 60% performance polyester complements this with technical functionality, helping to wick moisture from the body to the next layer of clothing. The 220 g\/m\u00b2 material provides enough warmth for the shirt to be used as a proper first layer in colder seasons.&nbsp;The result is a versatile merino wool functional shirt that can be worn under work clothes in the morning, taken on a hike on the weekend, or used as a base layer when exercising in winter.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HW Norwin functional thermal underwear shirt is a warm, breathable, and moisture-wicking base layer shirt that combines the natural properties<\/p>\n","protected":false},"featured_media":127039,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ep_exclude_from_search":false},"product_brand":[568],"product_cat":[817,1375,835],"product_tag":[],"class_list":["post-212966","product","type-product","status-publish","has-post-thumbnail","product_brand-hard-work","product_cat-mens-workwear","product_cat-special-offers","product_cat-thermal-underwear","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-variable","has-default-attributes","rtwpvs-product"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee\" \/>\n<meta property=\"og:description\" content=\"HW Norwin functional thermal underwear shirt is a warm, breathable, and moisture-wicking base layer shirt that combines the natural properties\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/\" \/>\n<meta property=\"og:site_name\" content=\"UM5.ee\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-25T05:03:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.um5.ee\/wp-content\/uploads\/2024\/09\/Sark-v2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/\",\"url\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/\",\"name\":\"HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.um5.ee\\\/wp-content\\\/uploads\\\/2024\\\/09\\\/Sark-v2.jpg\",\"datePublished\":\"2026-09-24T23:36:30+00:00\",\"dateModified\":\"2026-09-25T05:03:19+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.um5.ee\\\/wp-content\\\/uploads\\\/2024\\\/09\\\/Sark-v2.jpg\",\"contentUrl\":\"https:\\\/\\\/www.um5.ee\\\/wp-content\\\/uploads\\\/2024\\\/09\\\/Sark-v2.jpg\",\"width\":1200,\"height\":1200},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/product\\\/hw-norwin-merino-wool-thermal-underwear-shirt\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/home-page\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"HW Norwin Merino Wool Thermal Underwear Shirt\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/\",\"name\":\"UM5.ee\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.um5.ee\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/","og_locale":"en_US","og_type":"article","og_title":"HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee","og_description":"HW Norwin functional thermal underwear shirt is a warm, breathable, and moisture-wicking base layer shirt that combines the natural properties","og_url":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/","og_site_name":"UM5.ee","article_modified_time":"2026-09-25T05:03:19+00:00","og_image":[{"width":1200,"height":1200,"url":"https:\/\/www.um5.ee\/wp-content\/uploads\/2024\/09\/Sark-v2.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/","url":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/","name":"HW Norwin Merino Wool Thermal Underwear Shirt - UM5.ee","isPartOf":{"@id":"https:\/\/www.um5.ee\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/#primaryimage"},"image":{"@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/#primaryimage"},"thumbnailUrl":"https:\/\/www.um5.ee\/wp-content\/uploads\/2024\/09\/Sark-v2.jpg","datePublished":"2026-09-24T23:36:30+00:00","dateModified":"2026-09-25T05:03:19+00:00","breadcrumb":{"@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/#primaryimage","url":"https:\/\/www.um5.ee\/wp-content\/uploads\/2024\/09\/Sark-v2.jpg","contentUrl":"https:\/\/www.um5.ee\/wp-content\/uploads\/2024\/09\/Sark-v2.jpg","width":1200,"height":1200},{"@type":"BreadcrumbList","@id":"https:\/\/www.um5.ee\/en\/product\/hw-norwin-merino-wool-thermal-underwear-shirt\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.um5.ee\/en\/home-page\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/www.um5.ee\/en\/shop\/"},{"@type":"ListItem","position":3,"name":"HW Norwin Merino Wool Thermal Underwear Shirt"}]},{"@type":"WebSite","@id":"https:\/\/www.um5.ee\/en\/#website","url":"https:\/\/www.um5.ee\/en\/","name":"UM5.ee","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.um5.ee\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/product\/212966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/comments?post=212966"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/media\/127039"}],"wp:attachment":[{"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/media?parent=212966"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/product_brand?post=212966"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/product_cat?post=212966"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.um5.ee\/en\/wp-json\/wp\/v2\/product_tag?post=212966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}