{"product_id":"mens-100-merino-wool-base-layer","title":"Men's 100% Merino Wool Base Layer","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cem\u003eHeavier weight. Harder conditions. Still the only fibre that does this.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAt 240G this is a heavier merino knit than a lightweight summer base layer — built for the kind of conditions where you need genuine insulation alongside all the other things merino does that synthetic fabrics simply cannot replicate. Cold alpine starts, winter hiking days, ski touring, multi-day camping trips in autumn and early spring when temperatures drop overnight and you need your first layer to actually keep you warm rather than just cover your skin. Merino wool at this weight provides serious thermal insulation while still breathing well enough during hard efforts that you do not overheat on a long ascent — the natural temperature regulation that adapts throughout the day without you having to think about it. Moisture wicked away from the skin efficiently so you stay dry during high-output activity. Natural antimicrobial properties resist odour across multiple days of hard use — a genuine advantage on extended trail trips and expeditions where laundry is not possible and a cheap synthetic base layer would be unwearable after day two. Fine merino fibres sit comfortably against bare skin all day without the itch that puts people off traditional wool. Regular fit works as a standalone top in cooler conditions and layers cleanly under a fleece or insulated jacket without creating bulk. Machine washable on a cold gentle wool cycle — lay flat or hang to dry, do not tumble dry. Available in Black, Navy, Green and Grey in sizes S to 2XL.\u003c\/p\u003e","brand":"Next Horizon gear","offers":[{"title":"Black \/ S","offer_id":51683575529750,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ M","offer_id":51683575562518,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ L","offer_id":51683575595286,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ XL","offer_id":51683575628054,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 2XL","offer_id":51683575660822,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ S","offer_id":51683575693590,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ M","offer_id":51683575726358,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ L","offer_id":51683575759126,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ XL","offer_id":51683575791894,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 2XL","offer_id":51683575824662,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Navy \/ S","offer_id":51683575857430,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Navy \/ M","offer_id":51683575890198,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Navy \/ L","offer_id":51683575922966,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Navy \/ XL","offer_id":51683575955734,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Navy \/ 2XL","offer_id":51683575988502,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ S","offer_id":51683576021270,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ M","offer_id":51683576054038,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ L","offer_id":51683576086806,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ XL","offer_id":51683576119574,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 2XL","offer_id":51683576152342,"sku":null,"price":89.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/3563\/4198\/files\/menslongsleeve_2.png?v=1786266053","url":"https:\/\/nexthorizongear.com\/products\/mens-100-merino-wool-base-layer","provider":"Next Horizon Gear","version":"1.0","type":"link"}