The Castelli Meno Wind W tight, featurering the new Airflex stretchy breathable and windproof fabric at the front combined with Thermoflex Core 2 on the back. Mean you get maximum warmth and protection on cold windy days.New Airflex Thermo fabric on the front for maximum stretch with total windproofness,Back in Thermoflex Core 2 for warmth comfort and moisture management,Women\'s specific Kiss Air Donna Pad for all day comfort,Flat-lock seams,YKK Camlock ankle zippers with reflective tape for high visibility,Size\'s women\'s XS-XL,Weight 208g (S),Comfort range 0-8c,.Castelli size their clothing small. To ensure an optimal fit it is recommended you go up one size, compared to your normal cycle clothing size.