Louis Garneau Women's Size Chart The Course Superleggera 2 jersey offers ultimate performance in hot weather thanks to ultra light fabrics that provide exceptional breathability. Features: - coldblack(R): Reflects UV rays to reduce heat build-up even on dark textiles - Super light jersey: Only 114 g (4 oz) for a medium size - Full length invisible zip: Supple and light, allows maximum ventilation - Zip garage: Prevents neck irritation - Pre-shaped shoulders: Enhance comfort in cycling position - Laser-finished hem at arms: Designed for improved aerodynamics - 3 angled back pockets with reflective trim: Allow easy access - Multimedia sweatproof pocket: Protects your multimedia device thanks to a double wall that blocks moisture - Super Light Grip at back hem: Maintains fit and perforated for extra lightness - Front and back reflective accents - Racer Fit - Feather Weight