{"product_id":"merino-wool-athletic-quarter-zip-mens","title":"100% Merino Wool Athletic Quarter Zip - Men's Heavyweight","description":"\u003c!-- CERTIFICATION BADGES --\u003e\n\u003cstyle\u003e\n  .cert-badge {\n    display: inline-block;\n    border: 1px solid #000;\n    padding: 8px 16px;\n    margin: 0 8px 8px 0;\n    color: #000;\n    background-color: #fff;\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: 0.05em;\n    text-transform: uppercase;\n    text-decoration: none;\n    transition: all 0.2s ease-in-out;\n    white-space: nowrap;\n    cursor: pointer;\n  }\n  .cert-badge:hover {\n    background-color: #000;\n    color: #fff;\n    border-color: #000;\n  }\n  .cert-arrow {\n    font-size: 1.1em; \n    margin-left: 4px;\n    vertical-align: text-top;\n  }\n\u003c\/style\u003e\n\u003cdiv style=\"margin-bottom: 25px;\"\u003e\n\u003c!-- OEKO-TEX --\u003e \u003ca href=\"https:\/\/www.oeko-tex.com\/en\/our-standards\/oeko-tex-standard-100\" class=\"cert-badge\" title=\"Tested for harmful substances and certified safe.\" target=\"_blank\"\u003e OEKO-TEX 100 \u003cspan class=\"cert-arrow\"\u003e↗\u003c\/span\u003e \u003c\/a\u003e \u003c!-- Woolmark --\u003e \u003ca href=\"https:\/\/www.woolmark.com\/certification\/\" class=\"cert-badge\" title=\"Certified pure new wool quality and performance standards.\" target=\"_blank\"\u003e WOOLMARK CERTIFIED \u003cspan class=\"cert-arrow\"\u003e↗\u003c\/span\u003e \u003c\/a\u003e \u003c!-- RWS --\u003e \u003ca href=\"https:\/\/textileexchange.org\/responsible-wool-standard\/\" class=\"cert-badge\" title=\"Responsible Wool Standard certified for animal welfare and progressive land management.\" target=\"_blank\"\u003e RWS CERTIFIED \u003cspan class=\"cert-arrow\"\u003e↗\u003c\/span\u003e \u003c\/a\u003e \u003cbr\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.35em; line-height: 1.5;\"\u003eBuilt for sub-zero temps, howling winds, and heavy snowfall. Stay out longer with heavyweight thermal insulation and customizable ventilation when battling the elements.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThis \u003ca href=\"https:\/\/shirtcastle.com\/collections\/merino\" title=\"shop 100 percent merino wool clothing at ShirtCastle\"\u003e100 percent merino wool \u003c\/a\u003eathletic quarter-zip, from the century-old Merino experts at Minus33 in New Hampshire, is dubbed the \"Kobuk\" after the Arctic national park in Alaska. It's an ultra-warm thermal layer cut from 400 GSM interlock knit fabric woven from Australian Merino wool. Featuring integrated thumbholes, a protective mock neck, and a semi-auto locking zipper for on-the-go venting, it delivers maximum comfort and protection in extreme winter conditions.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eMaterials\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0; margin-bottom: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eFiber Content:\u003c\/strong\u003e 100% \u003ca href=\"https:\/\/shirtcastle.com\/blogs\/science\/what-is-merino-wool\" title=\"merino wool meaning\"\u003eMerino Wool\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eFabric Weight:\u003c\/strong\u003e 400 GSM Heavyweight\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eKnit Type:\u003c\/strong\u003e Interlock Knit\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eFiber Fineness:\u003c\/strong\u003e 18.5 Micron Fibers\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eSun Protection:\u003c\/strong\u003e UPF 50+\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e OEKO-TEX® Standard 100, Woolmark®, Responsible Wool Standard® (RWS)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eCare Rating:\u003c\/strong\u003e Total Easy Care (Machine Wash \u0026amp; Dry)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eConstruction \u0026amp; Fit\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0; margin-bottom: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eTotal Garment Weight:\u003c\/strong\u003e 19.2 oz \/ 544g (Size Large)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Regular fit — standard cut with room to breathe without being baggy (Runs true to size)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eLayer Type:\u003c\/strong\u003e Mid Layer, Insulating Layer\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eNeckline:\u003c\/strong\u003e 1\/4 Zip Mock Neck\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eHardware:\u003c\/strong\u003e YKK Semi-Auto Locking Zipper Pull with zipper garage\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eCuffs:\u003c\/strong\u003e Integrated thumbholes for easy layering and added hand warmth\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eStitching:\u003c\/strong\u003e Flatlock seams to prevent chafing\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eLabel:\u003c\/strong\u003e Tagless design (no itchy neck tags)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eOrigin \u0026amp; Sourcing\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eWool Source:\u003c\/strong\u003e 100% Australian Merino Wool\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eEthical Standards:\u003c\/strong\u003e Responsible Wool Standard (RWS) certified animal welfare and land management\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eRecommended Uses\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eIdeal Seasons:\u003c\/strong\u003e Fall, Winter\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eActivities:\u003c\/strong\u003e Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0°F and below (Active) | 0°F to 30°F (Inactive)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eSize Guide\u003c\/h3\u003e\n\u003cp style=\"font-size: 0.9em; color: #555; margin-bottom: 15px;\"\u003e\u003cem\u003eMeasurements refer to body size, not garment dimensions. All measurements are in inches.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eChest\u003c\/th\u003e\n\u003cth\u003eWaist\u003c\/th\u003e\n\u003cth\u003eSleeve Length\u003c\/th\u003e\n\u003cth\u003eShirt Length\u003c\/th\u003e\n\u003cth\u003eInseam\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eXS\u003c\/td\u003e\n\u003ctd\u003e33–35\"\u003c\/td\u003e\n\u003ctd\u003e24–27\"\u003c\/td\u003e\n\u003ctd\u003e30–31\"\u003c\/td\u003e\n\u003ctd\u003e25.5–26.5\"\u003c\/td\u003e\n\u003ctd\u003e25–27\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\u003c\/td\u003e\n\u003ctd\u003e35–38\"\u003c\/td\u003e\n\u003ctd\u003e28–30\"\u003c\/td\u003e\n\u003ctd\u003e31–32\"\u003c\/td\u003e\n\u003ctd\u003e26.5–27.5\"\u003c\/td\u003e\n\u003ctd\u003e28–30\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM\u003c\/td\u003e\n\u003ctd\u003e39–41\"\u003c\/td\u003e\n\u003ctd\u003e31–33\"\u003c\/td\u003e\n\u003ctd\u003e32–33\"\u003c\/td\u003e\n\u003ctd\u003e27.5–28.5\"\u003c\/td\u003e\n\u003ctd\u003e29–32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL\u003c\/td\u003e\n\u003ctd\u003e42–45\"\u003c\/td\u003e\n\u003ctd\u003e34–36\"\u003c\/td\u003e\n\u003ctd\u003e33–34\"\u003c\/td\u003e\n\u003ctd\u003e28.5–29.5\"\u003c\/td\u003e\n\u003ctd\u003e32–34\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXL\u003c\/td\u003e\n\u003ctd\u003e46–48\"\u003c\/td\u003e\n\u003ctd\u003e37–40\"\u003c\/td\u003e\n\u003ctd\u003e34–35\"\u003c\/td\u003e\n\u003ctd\u003e29.5–30.5\"\u003c\/td\u003e\n\u003ctd\u003e32–35\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXXL\u003c\/td\u003e\n\u003ctd\u003e49–52\"\u003c\/td\u003e\n\u003ctd\u003e41–44\"\u003c\/td\u003e\n\u003ctd\u003e35–36\"\u003c\/td\u003e\n\u003ctd\u003e30.5–31.5\"\u003c\/td\u003e\n\u003ctd\u003e34–35\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXXXL\u003c\/td\u003e\n\u003ctd\u003e52–54\"\u003c\/td\u003e\n\u003ctd\u003e45–49\"\u003c\/td\u003e\n\u003ctd\u003e36–37\"\u003c\/td\u003e\n\u003ctd\u003e31.5–32.5\"\u003c\/td\u003e\n\u003ctd\u003e34–36\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background-color: #f4f4f4; padding: 15px; border-left: 3px solid #000; margin-top: 25px; font-size: 0.9em; line-height: 1.6;\"\u003e\n\u003cstrong\u003eCare Guide:\u003c\/strong\u003e Turn inside out before washing. Machine wash cold on a gentle cycle with like colors using mild or wool-specific detergent. Tumble dry low heat. \u003cem\u003eDo NOT use fabric softener or bleach.\u003c\/em\u003e For seasonal storage, place in an airtight container.\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eAbout Minus33\u003c\/h3\u003e\n\u003cp\u003eRooted in over a century of New Hampshire woolen heritage, Minus33 designs performance-driven Merino wool apparel built for the elements. Born and tested in the rugged White Mountains, the brand focuses on natural fiber performance, thermal comfort, and durable construction for demanding outdoor pursuits.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eProduct Story\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eKobuk [koe-book]:\u003c\/strong\u003e Kobuk Valley is home to a vast National Park, majestic sand dunes, 500,000 migrating caribou, and the life-giving Kobuk River. Located entirely within the Arctic Circle where winter night temperatures drop to -50°F, its roadless wilderness demands gear that offers uncompromising warmth and resilience.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #e1e1e1; margin: 20px 0;\"\u003e\n\u003ch3\u003eWhy No Polyester or Synthetic Blends\u003c\/h3\u003e\n\u003cp\u003eYour Kobuk Quarter Zip is crafted from 100% natural Merino wool and contains zero synthetic poly blends. \u003ca href=\"https:\/\/shirtcastle.com\/blogs\/science\/microplastics\" title=\"information on polyester clothing and microplastics in the home and body\"\u003eHere's why that matters to your health\u003c\/a\u003e.\u003c\/p\u003e","brand":"Minus33 Merino Wool Clothing","offers":[{"title":"Black \/ XS","offer_id":46567611465924,"sku":"723XS","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ S","offer_id":46567611498692,"sku":"723S","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":46567611531460,"sku":"723M","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":46567611564228,"sku":"723L","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ XL","offer_id":46567611596996,"sku":"723XL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2XL","offer_id":46567611629764,"sku":"723XXL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 3XL","offer_id":46567611662532,"sku":"723XXXL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ S","offer_id":46567611695300,"sku":"723NVS","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ M","offer_id":46567611728068,"sku":"723NVM","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ L","offer_id":46567611760836,"sku":"723NVL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ XL","offer_id":46567611793604,"sku":"723NVXL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ 2XL","offer_id":46567611826372,"sku":"723NVXXL","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ 3XL","offer_id":46567611859140,"sku":"723NVXXXL","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/5344\/7108\/files\/merino_athletic_quarter_zip_mens_navy_blue_front.jpg?v=1787845874","url":"https:\/\/shirtcastle.com\/products\/merino-wool-athletic-quarter-zip-mens","provider":"ShirtCastle","version":"1.0","type":"link"}