Purchased in July of this year. Thank you. The list price is 59,400 yen (tax included). The following is the manufacturer's description: SPEC / Specifications Comfortable Use Temperature / Lower Limit Temperature: DX: -4°C / -11°C (NANGA standard) Regarding Temperature Notation <European Norm> Down: DX: Spanish Duck Down 90-10% (760FP) Fabric: Outer: 15D Aurora-Tex® Lining: 15D Ripstop Nylon Internal Structure: Box Quilt Construction Down Fill Weight: 600g Size: Regular Max Length: 210 X Max Shoulder Width 80/cm (for heights up to 178cm) Storage Size: φ17 × 31cm　Attached Features: Shoulder Warmer, Draft Tube, Titanium Sputtering Material Total Weight: Approx. 1,100g CONSTRUCTION / About the Structure Trapezoidal Box Quilt Construction Trapezoidal Box Quilt Construction The structure where the boxes support each other maximizes the loft of the down and prevents uneven distribution, reducing heat loss and providing efficient insulation. Puromote NANGA coleman isuka Popular Model...AURORA light Type...Mummy Type Features...For 3 seasons (Spring to Autumn) Features...For Winter