If you are looking for the lightest sleeping bag to save space during your international travels, then the Helium Solo is for you. Perfect for short trips when the assurance of a comfortable guesthouse is not always guaranteed, this Mountain Equipment sleeping bag features 700 cuin duck down insulation, providing a comfort temperature of 16°C, allowing you to enjoy a cool summer night. Outer shell 100% recycled HELIUM 20D, very lightweight and highly breathable with PFC-free water-repellent treatment 134 g of pure 90-10 duck down with a minimum fill power of 700 Alpine fit 2.0 improves comfort and maximizes thermal efficiency Narrow stitched-through baffles on top Stitched-through quilted base Mid-level side seams Shaped hood Anatomical 4-baffle offset footbox Supersoft 20D 100% recycled lining with PFC-free water-repellent treatment Comes with a lightweight compression sack and a storage cube Comfort temperature: 16°C Limit comfort temperature: 13°C Extreme temperature: 3°C Weight: 520 g Mountain Equipment Helium Solo - Sleeping bag | Hardloop