Rapha Men's Core Short Sleeve Jersey Key Features Core Performance - The perfect balance between comfort, performance, and value Fabric - Made from a stretch fabric for a close yet unrestrictive fit Breathability - Breathable comfort whether worn next to the skin or on top of a base layer Fit - Raglan sleeves and stretchy side panels provide stability in on-bike positions Construction - Strategically placed shoulder seams prevent fabric bunching under the arms Grip - Low-profile, laser-cut silicon gripper secures the hem Details and Materials Recommended for use in mild to warm conditions Soft and highly breathable matt fabric to keep you comfortable in all conditions Silicone-backed hem gripper for stable fit Side panels and raglan sleeves for a perfect fit Contrast ribbed trims at the collar and cuffs 100% Polyester