Castelli Cycling Squadra Stretch Jacket For Road And Gravel Cycling. Zipper closure IDEAL FOR: Road cycling or daily commutes in cool weather. The Squadra Stretch Jacket is a minimalist shell that performs well as an emergency layer or for daily commutes to repel nearly all wind. FABRIC: Wind resistant coated ripstop nylon fabric on front, back, and front of sleeves to keep the wind at bay. FIT: Constructed to fit close-to-body, the tightly knit stretch panels on sides and sleeves allow for a perfect fit. FEATURES: High collar keeps out the draft. REFLECTIVITY: Reflective details throughout to keep you visible in low-light situations.