The UBR Sonic Jacket is an ultralight down jacket from UBR that pairs full-stretch HD fabric with superslim woven down channels for warmth and mobility. Designed for layering, it offers windproof, water-repellent performance with a streamlined silhouette. Key attributes: Brown | Sand | Full stretch HD fabric | Windproof | Water-repellent (DWR) | Breathable | 800 fill power (goose down) | Ultralight (approx. 430 g) | Two-way YKK zipper | Two side pockets | 360° security system | Full-stretch construction | Superslim woven down channels | Sleek quilted silhouette | Minimalist, streamlined design | Dimensions & fit: Weight: 430 g | Tailored fit | Composition & care: 90% goose down | 10% feathers