Start their day off right with the Hot Chillys Pepper Skins Baselayer Top This crewneck top is made of breathable synthetic fabric that insulates but most importantly lets out excess heat so they dont end up sweaty When combined with a breathable mid layer and ski jacket the Pepper Skins Crew keeps kids warmer and drier when they ski The warmth factor on this long underwear top is a 6 which is a medium rating This is high enough to keep them warm but not so hot that they overheat Warmth factor 6 is a medium warmth for active kids Relaxed fit for freedom of movement Flatlock seams to prevent itching and chafing Soft synthetic fabric feels cottony but is more breathable Fun prints for kids