High loft fleece on the inside provides warmth to spare and you39ll love the softness on your skin with excellent moisture management from the multi denier fabric it39s also stretchy for a perfect fit and the flat lock seams add an extra touch of quality the riders who race in flanders in the spring are cycling39s tough guys this is castelli39s inspiration behind the flanders base layers no matter what the weather is outside you39ll be donning your kit and getting out to ride