Louis Garneau - Speedzone X-Lite Bike Vest Synthetic The X-Lite 19 fabric is ultralight, wind-breaking, and breathable while the X-Lite Mesh provides optimal ventilation. The Speedzone X-Lite Vest weighs approximately 60g (2.1oz), making it one of the lightest vests on the market. It can be compressed and stowed inside the collar pocket. Features a hole in the back for easy access to jersey pocket for displaying race numbers. Features a stretch trim for a comfortable fit and a full-length zipper with inner flap and zip garage to prevent irritation. Reflective accents provide increased visibility.