Gore Bike Wear Men's Power II Singlet 92% NYLON, 8% ELASTANE, MESH: 80% NYLON, 20% ELASTANE Imported Sleeveless: For hot summer days. Oversized mesh inserts guarantee maximum ventilation. Slim fit 3-compartment patch pockets on back Slightly slanted back pocket at side for better access Flat-lock seams Full length zip with semi-lock slider Zip-underflap 3-compartment patch pockets on back Slightly slanted back pocket at side for better access Flat-lock seams Zip-underflap