Mavic cosmic uv sleevesthese cosmic uv sleeves from mavic are designed to keep your arms warm on windy days and cool on hot days these pre shaped sleeves sit tight against the arms and have flatlock seams to prevent chafing featuresfabrics 375 knit sleek wick stflatlock seamsupf 30 permanent non chemical uv protectionclima ride technologypre shaped warmersoft fabric for cosy feelingdesigned for optimal sun protection and thermo regulation in hot summer temperaturestechnologies37 5 this