Womens featherlight jacket there are lightweight bike jackets and then there are ultra lightweight bike jackets weighing a mere 37 gm2 featherlight jacket belongs to the latter category and is the perfect choice for riders chasing grams this ultra lightweight wind repellent jacket comes with elastic mesh panels in hot spots for enhanced ventilation in addition the jacket features an ergonomic tight fit and reflective print at front and back packs easily into the back pocket of your bik