WarmthWarm material to provide insulation from the cold
head size:57 cm (approximate, as headband stretches)
CompositionMain fabric : 72.0% Polyester (PES), Main fabric : 24.0% Polyamide, Main fabric : 4.0% Elasthane
Product informationWarm, soft, and lightweight. You can also wear it under your triathlon helmet in cold weather!