Summer Bubble 2010 Castelli Red and Black Men's Short Sleeve Perspiration Breathable Comfortable Cycling Jersey Set Jersey Material:100% Polyester;Pant Material:80% Polyester and 20% Lycra Lightweight,breathable,wicking,quick-drying jersey High elastic fabric, breathable soft,personal comfort,stretch and strong COOLMAX Pad is moisture,breathable,personal comfort.Protection pad surface is anti-odor, anti-bacterial treatment,can quickly wicking to keep you dry and comfortable Tips: Size Chart for reference only, please choose jersey size according to the actual situation