Brand: NANGA Item Name: UDD BAG 450DX Color: Red Material: 100% Nylon (Outer & Inner), 90% Down, 10% Feather Spanish Duck Down with Super Water-Repellent Treatment Size: Regular [Product Description] ● Comfort Temperature: 1°C / Lower Limit Temperature: -4°C ● Regular (Height 166cm - 178cm) ● A lightweight 3-season (spring, summer, autumn) model with a rational structure. ● The fabric uses water-repellent nylon. ● The down uses UDD DX (770FP), a high-quality, high-performance down with super water-repellent treatment applied to DX (Spanish white duck down) feathers. ● The biggest weakness of down is getting wet. This is because when it absorbs water, the down doesn't fully expand, and the insulation performance decreases. ● UDD has solved this problem. Therefore, you can use it without worrying about getting wet from condensation, etc. ● The thin 15dn nylon fabric and high fill power down allow for quick expansion. ● By shortening the expansion time, you can protect yourself from the cold faster. ● Recommended for activities from late summer to late autumn. [Specifications/Standards] ● 〈Item Details〉 ● Fabric: 15dn nylon shiré water-repellent treatment ● Internal Structure: Trapezoidal box quilt structure ● Shoulder warmer ● Fill Power: Spanish Duck Down 90-10% (770FP) Super Water-Repellent Treatment ● Down Fill Weight: 450g ● Size: Regular ● Color: RED (Red) ● Storage Size: φ14 x 30cm ● Total Weight: 825g Thank you for viewing. This is a NANGA sleeping bag. Purchased from an authorized online shop in the summer of 2025. It comes with a storage mesh bag, and it is unused and unopened. I personally bought it to use from autumn and winter, but I no longer need it because I got another NANGA sleeping bag. NANGA sleeping bags are popular for the Aurora Light series, but I personally feel that this UDD model is more high-performance for the same 450 rating. It has a shoulder warmer and a trapezoidal box quilt structure. Personally recommended.