Weight: 81g Lightweight YKK zip for greater compactibility Breathable, water-repellent, windproof jacket Mesh lining in collar Vent for increased breathability shark Gill? vents Reflective piping Outside pocket with stuff sack for jacket rear pocket Stretch trim Minimum weight & minimum bulk: weighs less than & energy bar & is smaller than an apple. We invented Hot Pack, & now were seeing every other cycling brand trying to copy it. Its the only product with more copies than a Louis Vuitton handbag! Its Italys most popular jacket & will be your favorite too. This is the fourth evolution of the jacket, & each time it gets lighter, more water resistant, & more compact. Be prepared for unpredictable weather with the Sportful Hot Pack 4 Windproof Cycling Jacket. With its tiny storage footprint, you can stow it in the rear pocket of your jersey safe in the knowledge that the breathable, water-repellent construction will protect you from the elements & remain breathable & comfortable.