{"title":"Thermal base layers","description":"\u003cp\u003eThermal base layers are a starting point for a work outfit you can adjust as conditions change. Compare the fabric composition, neckline, sleeve length and care instructions rather than relying on a warmth label alone. Check whether the intended fit is close or relaxed using the style-specific size chart.\u003c\/p\u003e\u003cp\u003eConsider how the layer sits beneath your work trousers, overalls or jacket. Seams and excess fabric can feel different during a long seated task or repeated bending. If your work requires flame-resistant or other specialist clothing, follow the workplace specification for the full clothing system.\u003c\/p\u003e\u003cp\u003eSee \u003ca href=\"\/collections\/coveralls-and-overalls\"\u003ecoveralls and overalls\u003c\/a\u003e and \u003ca href=\"\/collections\/work-jackets\"\u003ework jackets\u003c\/a\u003e when planning the layers around it.\u003c\/p\u003e","products":[{"product_id":"blaklader-1849-underwear-thermal-trousers-warm-100-merino","title":"Blaklader 1849 Merino Thermal Base Layer Leggings","description":"\u003cp\u003eMerino-wool leggings for wearing beneath your working trousers. The 1849 is a dedicated base layer for building a cold-weather clothing system.\u003c\/p\u003e\u003ch2\u003eDetails\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThermal underlayer design\u003c\/li\u003e\n\u003cli\u003eFull-length leggings\u003c\/li\u003e\n\u003cli\u003eMid-grey and black colourway\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaterials\u003c\/h2\u003e\u003cp\u003e100% merino wool.\u003c\/p\u003e\u003ch2\u003eFit and sizing\u003c\/h2\u003e\u003cp\u003eChoose the size and colour shown in the selectors. Fit differs between brands; compare your measurements and allow for any layers you intend to wear underneath.\u003c\/p\u003e\u003cp\u003eWear as an underlayer. Warmth depends on conditions, activity and the complete clothing system; no temperature or protective-performance guarantee is made.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eFollow the care label supplied with the garment. Any decoration or specialist finish may change the care requirements.\u003c\/p\u003e\u003cp\u003eRead our \u003ca href=\"\/policies\/shipping-policy\"\u003edelivery guide\u003c\/a\u003e and \u003ca href=\"\/policies\/refund-policy\"\u003ereturns policy\u003c\/a\u003e before ordering.\u003c\/p\u003e","brand":"Workwear Nation Ltd","offers":[{"title":"Mid grey\/Black \/ 4XL","offer_id":59270268453212,"sku":"1849173296994XL","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ 5XL","offer_id":59270268485980,"sku":"1849173296995XL","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ L","offer_id":59270268518748,"sku":"184917329699L","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ M","offer_id":59270268551516,"sku":"184917329699M","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ S","offer_id":59270268584284,"sku":"184917329699S","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XL","offer_id":59270268617052,"sku":"184917329699XL","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XS","offer_id":59270268649820,"sku":"184917329699XS","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XXL","offer_id":59270268682588,"sku":"184917329699XXL","price":59.03,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XXXL","offer_id":59270268715356,"sku":"184917329699XXXL","price":59.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1058\/0246\/5628\/files\/184917329699_CF_HRJ.jpg?v=1790286157"},{"product_id":"blaklader-4897-underwear-thermal-top-warm-100-merino","title":"Blaklader 4897 Merino Thermal Base Layer Top","description":"\u003cp\u003eA long-sleeved merino-wool base layer for wearing beneath a work shirt, fleece or jacket. Pair it with suitable outer layers for the conditions.\u003c\/p\u003e\u003ch2\u003eDetails\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLong-sleeved underlayer\u003c\/li\u003e\n\u003cli\u003eMid-grey and black colourway\u003c\/li\u003e\n\u003cli\u003eDesigned to sit beneath other work clothing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaterials\u003c\/h2\u003e\u003cp\u003e100% merino wool.\u003c\/p\u003e\u003ch2\u003eFit and sizing\u003c\/h2\u003e\u003cp\u003eChoose the size and colour shown in the selectors. Fit differs between brands; compare your measurements and allow for any layers you intend to wear underneath.\u003c\/p\u003e\u003cp\u003eWear as an underlayer. Warmth depends on conditions, activity and the complete clothing system; no temperature or protective-performance guarantee is made.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eFollow the care label supplied with the garment. Any decoration or specialist finish may change the care requirements.\u003c\/p\u003e\u003cp\u003eRead our \u003ca href=\"\/policies\/shipping-policy\"\u003edelivery guide\u003c\/a\u003e and \u003ca href=\"\/policies\/refund-policy\"\u003ereturns policy\u003c\/a\u003e before ordering.\u003c\/p\u003e","brand":"Workwear Nation Ltd","offers":[{"title":"Mid grey\/Black \/ 4XL","offer_id":59270268748124,"sku":"4897173296994XL","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ 5XL","offer_id":59270268780892,"sku":"4897173296995XL","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ L","offer_id":59270268813660,"sku":"489717329699L","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ M","offer_id":59270268846428,"sku":"489717329699M","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ S","offer_id":59270268879196,"sku":"489717329699S","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XL","offer_id":59270268911964,"sku":"489717329699XL","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XS","offer_id":59270268944732,"sku":"489717329699XS","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XXL","offer_id":59270268977500,"sku":"489717329699XXL","price":64.53,"currency_code":"GBP","in_stock":true},{"title":"Mid grey\/Black \/ XXXL","offer_id":59270269010268,"sku":"489717329699XXXL","price":64.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1058\/0246\/5628\/files\/489717329699_CF.jpg?v=1790286158"},{"product_id":"portwest-b133-thermal-baselayer-top-various-colours","title":"Portwest B133 Thermal Base Layer Top","description":"\u003cp\u003eA long-sleeved thermal top with a crew neck and cuffed sleeves. Low-profile seams keep the construction straightforward for wearing beneath other layers.\u003c\/p\u003e\u003ch2\u003eDetails\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCrew neck\u003c\/li\u003e\n\u003cli\u003eCuffed sleeves\u003c\/li\u003e\n\u003cli\u003eLow-profile seams\u003c\/li\u003e\n\u003cli\u003eComfort-fit cut\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaterials\u003c\/h2\u003e\u003cp\u003e100% wicking polyester, according to the manufacturer’s B133 datasheet.\u003c\/p\u003e\u003ch2\u003eFit and sizing\u003c\/h2\u003e\u003cp\u003eChoose the size and colour shown in the selectors. Fit differs between brands; compare your measurements and allow for any layers you intend to wear underneath.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eFollow the care label supplied with the garment. Any decoration or specialist finish may change the care requirements.\u003c\/p\u003e\u003cp\u003eRead our \u003ca href=\"\/policies\/shipping-policy\"\u003edelivery guide\u003c\/a\u003e and \u003ca href=\"\/policies\/refund-policy\"\u003ereturns policy\u003c\/a\u003e before ordering.\u003c\/p\u003e","brand":"Workwear Nation Ltd","offers":[{"title":"Black \/ Large","offer_id":59270269337948,"sku":"B133BKRL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ Medium","offer_id":59270269370716,"sku":"B133BKRM","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ Small","offer_id":59270269403484,"sku":"B133BKRS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XL","offer_id":59270269436252,"sku":"B133BKRXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XXL","offer_id":59270269469020,"sku":"B133BKRXXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ 3 XL","offer_id":59270269501788,"sku":"B133CHAXXXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ 4XL","offer_id":59270269534556,"sku":"B133CHA4XL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Large","offer_id":59270269567324,"sku":"B133CHAL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Medium","offer_id":59270269600092,"sku":"B133CHAM","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Small","offer_id":59270269632860,"sku":"B133CHAS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XL","offer_id":59270269665628,"sku":"B133CHAXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XS","offer_id":59270269698396,"sku":"B133CHAXS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XXL","offer_id":59270269731164,"sku":"B133CHAXXL","price":13.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1058\/0246\/5628\/files\/Portwest-B133-Thermal-Baselayer-Top-Various-Colours-Workwear-Nation-Ltd-8418.gif?v=1790286163"},{"product_id":"portwest-b131-thermal-baselayer-leggings-various-colours","title":"Portwest B131 Thermal Base Layer Leggings","description":"\u003cp\u003eSmooth thermal leggings with low-profile seams and a comfort-fit cut. Wear them beneath work trousers as part of your layering system.\u003c\/p\u003e\u003ch2\u003eDetails\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLow-profile seams\u003c\/li\u003e\n\u003cli\u003eComfort-fit cut\u003c\/li\u003e\n\u003cli\u003eRegular-leg option as supplied\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaterials\u003c\/h2\u003e\u003cp\u003e100% wicking polyester, 140 g\/m², according to the manufacturer’s B131 datasheet.\u003c\/p\u003e\u003ch2\u003eFit and sizing\u003c\/h2\u003e\u003cp\u003eChoose the size and colour shown in the selectors. Fit differs between brands; compare your measurements and allow for any layers you intend to wear underneath.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eFollow the care label supplied with the garment. Any decoration or specialist finish may change the care requirements.\u003c\/p\u003e\u003cp\u003eRead our \u003ca href=\"\/policies\/shipping-policy\"\u003edelivery guide\u003c\/a\u003e and \u003ca href=\"\/policies\/refund-policy\"\u003ereturns policy\u003c\/a\u003e before ordering.\u003c\/p\u003e","brand":"Workwear Nation Ltd","offers":[{"title":"Black \/ Large \/ Regular Leg","offer_id":59270269763932,"sku":"B131BKRL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ Medium \/ Regular Leg","offer_id":59270269796700,"sku":"B131BKRM","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ Small \/ Regular Leg","offer_id":59270269829468,"sku":"B131BKRS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XL \/ Regular Leg","offer_id":59270269862236,"sku":"B131BKRXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XS \/ Regular Leg","offer_id":59270269895004,"sku":"B131BKRXS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XXL \/ Regular Leg","offer_id":59270269927772,"sku":"B131BKRXXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ 3 XL \/ Regular Leg","offer_id":59270269960540,"sku":"B131CHAXXXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ 4XL \/ Regular Leg","offer_id":59270269993308,"sku":"B131CHA4XL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Large \/ Regular Leg","offer_id":59270270026076,"sku":"B131CHAL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Medium \/ Regular Leg","offer_id":59270270058844,"sku":"B131CHAM","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ Small \/ Regular Leg","offer_id":59270270091612,"sku":"B131CHAS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XL \/ Regular Leg","offer_id":59270270124380,"sku":"B131CHAXL","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XS \/ Regular Leg","offer_id":59270270157148,"sku":"B131CHAXS","price":13.49,"currency_code":"GBP","in_stock":true},{"title":"Charcoal \/ XXL \/ Regular Leg","offer_id":59270270189916,"sku":"B131CHAXXL","price":13.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1058\/0246\/5628\/files\/Portwest-B131-Thermal-Baselayer-Leggings-Various-Colours-Workwear-Nation-Ltd-3888.gif?v=1790286163"}],"url":"https:\/\/100percentworkwear.com\/collections\/thermal-base-layers.oembed","provider":"100 Percent Workwear","version":"1.0","type":"link"}