{"product_id":"heatwave-thermalwear-girls-lined-thermal-underwear-set-with-long-sleeve-top-base-layer","title":"Heatwave Thermalwear Girls Lined Thermal Underwear Set With Long Sleeve Top Base Layer","description":"\u003cp\u003eWhen the cold bites, you need a base layer that works as hard as you do — genuinely warm, genuinely comfortable, and invisible under everything you wear. Keep her warm, comfy, and ready for every winter adventure with the Girls Thermal Underwear Set Lined Long Sleeve Top \u0026amp; Long Jane Bottom by Heatwave Thermalwear. This cosy kids’ winter base layer pairs a soft long-sleeve top with flexible long bottoms to deliver breathable insulation without bulk. Designed for school days, outdoor play, and bedtime, it’s a popular choice for dependable cold-weather comfort, superior softness, and a smooth, easy-to-layer fit.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSoft and Gentle Cotton Fabric — Crafted from a premium cotton-polyester blend, this thermal set wraps delicate skin in soft-touch comfort while offering natural breathability and steady warmth.\u003c\/li\u003e\n\u003cli\u003eFlexible, Easy-Move Fit — A stretchable knit adapts to every jump, run, and rest.\u003c\/li\u003e\n\u003cli\u003eWinter-Ready Warmth — Engineered to trap body heat while allowing airflow, the insulating fabric helps balance warmth in cold weather.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterials\u003c\/h3\u003e\n\u003cp\u003eCrafted from a premium cotton-polyester blend, this thermal set wraps delicate skin in soft-touch comfort while offering natural breathability and steady warmth. The fabric is gentle for kids prone to irritation or dryness, with a lightweight feel that won’t weigh them down.\u003c\/p\u003e\n\u003ch3\u003eColours Available\u003c\/h3\u003e\n\u003cp\u003eClassic Black, White, and Marl Grey—versatile shades that pair effortlessly with school uniforms, pyjamas, or winter outfits.\u003c\/p\u003e\n\u003ch3\u003eSizes Available\u003c\/h3\u003e\n\u003cp\u003eages 3–5, 6–8, 9–11, and 12–13 years, ensuring a secure, comfortable fit as she grows. Choose her usual size for a close, base-layer fit that’s snug yet flexible.\u003c\/p\u003e\n\u003ch3\u003eCare Instructions\u003c\/h3\u003e\n\u003cp\u003eMachine wash at 40°C with similar colours. Turn inside out to help preserve softness and shape. Line dry or tumble dry on low; do not bleach. Wash regularly to maintain breathability and insulating performance.\u003c\/p\u003e\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cp\u003ePerfect Christmas gift for outdoor enthusiasts, hikers, and skiers A thoughtful birthday treat for her who feels the cold Great Secret Santa present — practical, comfortable, always appreciated Ideal self-care gift for anyone who spends time outdoors in winter.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this warm enough for skiing or outdoor sports?\u003c\/strong\u003e\u003cbr\u003eYes — the insulating yarn and brushed interior are engineered for cold-weather performance as a base layer for skiing, snowboarding, and hiking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I wear this under everyday clothes?\u003c\/strong\u003e\u003cbr\u003eAbsolutely. The slim ribbed fit layers smoothly under jeans, trousers, or work attire without adding visible bulk.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for sensitive skin?\u003c\/strong\u003e\u003cbr\u003eYes — the hypoallergenic fibres are gentle and non-irritating for comfortable all-day wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sizes are available?\u003c\/strong\u003e\u003cbr\u003ePlease refer to the Sizes Available section for the full range. If you're between sizes, we recommend sizing up for the most comfortable layering fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it machine washable?\u003c\/strong\u003e\u003cbr\u003eYes — machine wash at 40°C. Easy to care for, wash after wash.\u003c\/p\u003e","brand":"Heatwave Thermalwear","offers":[{"title":"BLACK \/ 3-5 YRS","offer_id":56027208417655,"sku":"RZK38822","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"BLACK \/ 6-8 YRS","offer_id":56027208450423,"sku":"RZK38823","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"BLACK \/ 9-11 YRS","offer_id":56027208483191,"sku":"RZK38824","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"BLACK \/ 12-13 YRS","offer_id":56027208515959,"sku":"RZK38825","price":6.67,"currency_code":"GBP","in_stock":false},{"title":"WHITE \/ 3-5 YRS","offer_id":56027208548727,"sku":"RZK38826","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 6-8 YRS","offer_id":56027208581495,"sku":"RZK38827","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 9-11 YRS","offer_id":56027208614263,"sku":"RZK38828","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 12-13 YRS","offer_id":56027208647031,"sku":"RZK38829","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"MARL GREY \/ 3-5 YRS","offer_id":56027208679799,"sku":"RZK38830","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"MARL GREY \/ 6-8 YRS","offer_id":56027208712567,"sku":"RZK38831","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"MARL GREY \/ 9-11 YRS","offer_id":56027208745335,"sku":"RZK38832","price":6.67,"currency_code":"GBP","in_stock":true},{"title":"MARL GREY \/ 12-13 YRS","offer_id":56027208778103,"sku":"RZK38833","price":6.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1496\/2424\/files\/girls-thermal-underwear-set-lined-long-sleeve-top-long-jane-bottom-kids-winter-base-layer-for-cold-weather-by-heatwave-thermalwear-thermal-underwear-1199313280.png?v=1761227156","url":"https:\/\/www.sockstack.com\/en-je\/products\/heatwave-thermalwear-girls-lined-thermal-underwear-set-with-long-sleeve-top-base-layer","provider":"Sock Stack","version":"1.0","type":"link"}