Castelli Climber's 3.0 SL Jersey Cycling jersey (M, red) - Airy cycling jersey for hot daysThe Climber's 3.0 SL Jersey from Castelli is a must for riding on warm summer days. Made of a breathable mesh StradaPro 3D fabric, the air will be able to circulate through and moisture will be wicked away to the outside. As a result, you’ll remain dry and cool. Plus, thanks to the elongated back, your lower back will be covered at all times. Another practical feature includes the three back pockets for storing away your cycling essentials. The Climber's 3.0 SL Jersey also has tight sleeves to reduce wind resistance.