HELIUM 20 outer shell is very light and highly breathable. 385g of 90-10 Pure Duck Down with a minimum fill power of 700. Alpine fit maximises thermal efficiency. Slanted Box-Wall baffles throughout. 5 baffle anatomically shaped hood. 4 baffle anatomically shaped and offset foot-box. Full length Gemini zip baffle and integrated collar with Lode Lock closure. The item “Mountain Equipment Helium 400 Sleeping Bag Backpacking Down 23 Degree” is in sale since Wednesday, November 08, 2017. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “beeauu” and is located in Glenwood Springs, Colorado. This item can be shipped to United States.