This down puffer is designed for young urban cycling commuters who value fashion and function features, while also prioritizing sustainability. We innovatively designed a 3D ruffle down channel structure on the back, inspired by Chinese paper-cutting, to achieve dynamic breathability for ventilation during cycling. Moreover, we developed a foldable down strip on the lower back, which allows you to extend the hem for enhanced wind protection during cycling. When heading indoors, the puffer can be transformed into a sling bag for better convenience movement. This puffer also features a wide-view windproof hood, a detachable antibacterial face mask, and non-slip printed cuffs. This puffer is crafted with recycled polyester fabric and 800 fill power recycled down. At the end of its lifecycle, the post-consumer down fabric and down feathers will be chemically processed into recycled yarn and protein yarn for material regeneration and achieving a complete ‘Garment to Garment’ lifecycle.