TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers cozy Fleece Lined Pajama Long John Set

Fabric type: AEROHEAT EXTREME : 94% ULTRA-tender Polyester and 6% SpandexPREMIUM FABRIC : Aeroheat Fabric is knitted with hollow-core heat generating thread, so it allows superior warmth and feather weight on the garment at the same time.FUNCTIONAL & BASE LAYER : These pants feature a FLY OPEN for easy access. This thermal sets good for winter pajama, base layer under chilly weathers. Excellent for outdoor activity.SWEAT MOISTURE WICKING : The breathable and stretchable fabric keep you dry all days . This thermal underwear absorb excess moisture and wick sweat away from your skin to avoid any sticky or clammy feelings you may get.ULTRA SOFT and LIGHT WEIGHT: These thermal underwear are lightweight and fit snug against the skin. They won’t bunch up and contour to the shape of your body. Can wear them on their own or under another clothes for added comfort. No bulkiness means no riding up or pinching.SUITABLE FOR INDOOR AND OUTDOOR : Perfect for at home also good for activities such as hiking, running, biking, skiing, snowshoeing, walking, etc. Perfect for everyday use. premium materials and excellent craftsmanship ensure long-lasting durability.