The BGD Hyperfunction Goose Down Feather Jacket is a warm and versatile down jacket. It’s windproof and water repellent with a breathable liner and perfect for all pilots, beginners to pros, whether cruising the Rhine-Moselle or soaring above the main Alpine ridge. Ergonomically shaped sleeves and shoulders allow excellent freedom of movement and the lightweight down filling has an excellent warmth-to-weight ratio. Drawstrings in the hood and hem keep draughts out, while two back ventilation zips can be opened to shed heat if necessary. The BGD Hyperfunction Jacket is available in three women's sizes and five men's sizes. FeedbackMe and my wife we both have one, we love them heaps, they are goose down, good value for money, very comfy, warm to fly with, light and pack small. I pack mine into the riser bag that comes with my glider. Martin Havel.Use Flying Hiking Outdoor activities Properties Warm Breathable lining Wind-repellent Water-repellent Small pack size Features Mobile phone breast pocket Two zipped side pockets Drawstrings in the hood and waistband Two ventilation zips in the upper back Material Outer material: 100% nylon Inner material: 100% polyester Filling: 100% down Weight Men's size (L) 385g Sizing Chart