{"product_id":"zerofit-ultimate-heatrub-baselayer-black","title":"ZeroFit Ultimate Heatrub Baselayer Black","description":"\u003cp data-end=\"562\" data-start=\"329\"\u003eThe \u003cstrong data-end=\"407\" data-start=\"333\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eZeroFit\u003c\/span\u003e\u003c\/span\u003e Ultimate Heatrub Baselayer Shirt\u003c\/strong\u003e is the warmest baselayer in the ZeroFit range, and it’s earned that reputation the hard way, through proper testing, not marketing fluff.\u003c\/p\u003e\n\u003cp data-end=\"903\" data-start=\"564\"\u003eIndependently tested and proven to be \u003cstrong data-end=\"649\" data-start=\"602\"\u003efive times warmer than a standard baselayer\u003c\/strong\u003e and \u003cstrong data-end=\"684\" data-start=\"654\"\u003etwice as warm as a sweater\u003c\/strong\u003e, the Ultimate Heatrub delivers serious cold-weather performance while remaining impressively thin and comfortable. It’s designed for people who spend long days outdoors and don’t want bulky layers restricting movement.\u003c\/p\u003e\n\u003cp data-end=\"1260\" data-start=\"905\"\u003eAt the heart of the Ultimate is ZeroFit’s innovative \u003cstrong data-end=\"984\" data-start=\"958\"\u003eHeat Thread technology\u003c\/strong\u003e. These specially engineered fibres are activated by even the smallest movements, gently brushing against the skin to generate warmth instantly. Once created, the clever fabric construction traps and retains that heat, keeping your body temperature stable in harsh conditions.\u003c\/p\u003e\n\u003cp data-end=\"1526\" data-start=\"1262\"\u003eUnlike many thermal baselayers, the Ultimate does \u003cstrong data-end=\"1319\" data-start=\"1312\"\u003enot\u003c\/strong\u003e rely on compression to keep you warm. This means greater comfort, unrestricted movement, and a more natural fit, making it ideal for motorcycling and other active outdoor pursuits where flexibility matters.\u003c\/p\u003e\n\u003cp data-end=\"1765\" data-start=\"1528\"\u003eThe slightly looser neckline is a deliberate design choice. During development, tighter necklines were found to cause overheating, so the Ultimate allows excess heat to escape when needed, keeping you warm without becoming uncomfortable.\u003c\/p\u003e\n\u003cp data-end=\"2008\" data-start=\"1767\"\u003eExtensive testing at Japan’s prestigious \u003cstrong data-end=\"1827\" data-start=\"1808\"\u003eBoken Institute\u003c\/strong\u003e resulted in an impressive \u003cstrong data-end=\"1887\" data-start=\"1854\"\u003eHeat Retention Rating of 0.78\u003c\/strong\u003e. To put that into perspective, a standard baselayer typically measures 0.1 to 0.14, while a sweater averages around 0.3.\u003c\/p\u003e\n\u003cp data-end=\"2347\" data-start=\"2010\"\u003eBuilt to perform in temperatures as low as \u003cstrong data-end=\"2062\" data-start=\"2053\"\u003e-10°C\u003c\/strong\u003e, the Ultimate Heatrub Baselayer Shirt is ideal for motorcycling, hiking, fishing, skiing, sailing, workwear and everyday cold-weather use. Thanks to its exceptional warmth, there’s no need to pile on multiple layers, making it a cost-effective and practical solution for staying warm.\u003c\/p\u003e\n\u003ch4 data-end=\"2374\" data-start=\"2354\"\u003eProduct Benefits\u003c\/h4\u003e\n\u003cul data-end=\"2722\" data-start=\"2375\"\u003e\n\u003cli data-end=\"2460\" data-start=\"2375\"\u003eIndependently tested and proven to be five times warmer than a standard baselayer\u003c\/li\u003e\n\u003cli data-end=\"2529\" data-start=\"2461\"\u003eGenerates instant warmth through movement-activated Heat Threads\u003c\/li\u003e\n\u003cli data-end=\"2595\" data-start=\"2530\"\u003eNo compression fit, warm without feeling tight or restrictive\u003c\/li\u003e\n\u003cli data-end=\"2664\" data-start=\"2596\"\u003eReplaces multiple bulky layers with a single lightweight garment\u003c\/li\u003e\n\u003cli data-end=\"2722\" data-start=\"2665\"\u003eExcellent stretch for comfort and freedom of movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-end=\"2744\" data-start=\"2729\"\u003eSizing Note\u003c\/h4\u003e\n\u003cp data-end=\"2910\" data-start=\"2745\"\u003eThe Ultimate Heatrub Baselayer Shirt is constructed using an advanced \u003cstrong data-end=\"2842\" data-start=\"2815\"\u003efour-way stretch fabric\u003c\/strong\u003e, designed to adapt to a wide range of activities and body movement.\u003c\/p\u003e\n\u003cp data-end=\"3073\" data-start=\"2912\"\u003eIt fits slightly more snug than the ZeroFit Move baselayer. We recommend \u003cstrong data-end=\"3052\" data-start=\"2985\"\u003eordering one size up from your usual t-shirt or polo shirt size\u003c\/strong\u003e for optimal comfort.\u003c\/p\u003e\n\u003cp data-end=\"3133\" data-start=\"3075\"\u003e*Sizing guidance assumes a standard chest and abdomen fit.\u003c\/p\u003e\n\u003ch4 data-end=\"3164\" data-start=\"3140\"\u003eGarment Construction\u003c\/h4\u003e\n\u003cp data-end=\"3231\" data-start=\"3165\"\u003eAcrylic 68%\u003cbr data-end=\"3179\" data-start=\"3176\"\u003eNylon 21%\u003cbr data-end=\"3191\" data-start=\"3188\"\u003eWool 7%\u003cbr data-end=\"3201\" data-start=\"3198\"\u003ePolyester 2%\u003cbr data-end=\"3216\" data-start=\"3213\"\u003ePolyurethane 2%\u003c\/p\u003e\n\u003ch4 data-end=\"3376\" data-start=\"3347\"\u003eOptimal Temperature Range\u003c\/h4\u003e\n\u003cp data-end=\"3390\" data-start=\"3377\"\u003e-10°C to 10°C\u003c\/p\u003e\n\u003ch4 data-end=\"3413\" data-start=\"3397\"\u003eSuitable For\u003c\/h4\u003e\n\u003cp data-end=\"3513\" data-start=\"3414\"\u003eMotorcycling, scuba, golf, hiking, equine sports, sailing, fishing, skiing, gardening and workwear.\u003c\/p\u003e","brand":"ZeroFit","offers":[{"title":"XS \/ Black","offer_id":43198273781831,"sku":"vft1789219658905","price":51.53,"currency_code":"USD","in_stock":true},{"title":"S \/ Black","offer_id":43198273814599,"sku":"lrj1789219658906","price":62.17,"currency_code":"USD","in_stock":true},{"title":"M \/ Black","offer_id":43198273847367,"sku":"kvs1789219658907","price":51.53,"currency_code":"USD","in_stock":true},{"title":"L \/ Black","offer_id":43198273880135,"sku":"qqo1789219658908","price":60.53,"currency_code":"USD","in_stock":true},{"title":"XL \/ Black","offer_id":43198273912903,"sku":"pdz1789219658909","price":57.26,"currency_code":"USD","in_stock":true},{"title":"XXL \/ Black","offer_id":43198273945671,"sku":"fci1789219658910","price":61.35,"currency_code":"USD","in_stock":true},{"title":"3XL \/ Black","offer_id":43198273978439,"sku":"opu1789219658911","price":62.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/2809\/8375\/files\/zerofit-ultimate-heatrub-baselayer-black_1.jpg?v=1789219662","url":"https:\/\/www.driftwoodgarden.shop\/products\/zerofit-ultimate-heatrub-baselayer-black","provider":"My Store","version":"1.0","type":"link"}