{"product_id":"mens-thermal-base-layer-underwear-set","title":"Men's Base Layer Thermal Set – Seamless Insulated Long Underwear for Cold Weather \u0026 Winter Sports | Thomler","description":"\u003ch2\u003eStay Warm Without the Bulk\u003c\/h2\u003e\u003cp\u003eThis two-piece insulated base layer system keeps you comfortable in freezing conditions without restricting movement. The set includes a long-sleeve top and matching bottoms, both engineered with seamless construction to eliminate chafing. Designed for active use, the fabric wicks moisture away from your skin while trapping body heat—so you stay dry during high-output activities and warm when you stop moving. Whether you're heading out for a day on the slopes, a winter hike, or just need reliable cold-weather underwear for everyday wear, this set delivers lightweight warmth you can count on.\u003c\/p\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1060\/5327\/1890\/files\/Creatives800x800_15.png?v=1789394024\" alt=\"\" style=\"width:100%;max-width:100%;height:auto;display:block;margin:24px 0;\"\u003e\u003ch2\u003eWhy You Need This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Two-Piece System:\u003c\/strong\u003e Includes both top and bottoms for full-body coverage and layering versatility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Construction:\u003c\/strong\u003e No irritating seams or pressure points, even under tight outer layers or during extended wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture-Wicking Fabric:\u003c\/strong\u003e Pulls sweat away from your skin to keep you dry and prevent that post-activity chill.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Range of Motion:\u003c\/strong\u003e Stretchy, flexible fit moves with you during skiing, snowboarding, hiking, or any winter activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEveryday Cold-Weather Essential:\u003c\/strong\u003e Works as a standalone layer on moderately cold days or under your regular clothes when temperatures drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Drying Performance:\u003c\/strong\u003e Lightweight material dries faster than cotton, so you're ready for the next adventure sooner.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBuilt for Real Winter Conditions\u003c\/h2\u003e\u003cp\u003eThis thermal underwear set is designed for men who need reliable warmth without sacrificing comfort or mobility. The stretchy, breathable fabric adapts to your body temperature—trapping heat when you're stationary and releasing excess warmth during movement. The seamless design means no chafing under ski pants or layered clothing, and the snug fit stays in place without riding up or bunching. Available in multiple sizes and neutral color options, this base layer works under any outfit. We offer free shipping across the United States and a 30-day return policy, so you can find the right fit with confidence.\u003c\/p\u003e","brand":"Thomler","offers":[{"title":"Black \/ XS","offer_id":54722426536274,"sku":"SKU_1789394020610_754","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ S","offer_id":54722426569042,"sku":"SKU_1789394020610_87","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":54722426601810,"sku":"SKU_1789394020610_447","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":54722426634578,"sku":"SKU_1789394020610_742","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ XL","offer_id":54722426667346,"sku":"SKU_1789394020610_827","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2XL","offer_id":54722426700114,"sku":"SKU_1789394020610_854","price":49.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ 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