While your 20 degree down bag may be nice on those fall and spring backpacking trips, sleeping in a bag that warm during a hot summer night will definitely leave you feeling like a sweaty pig in a blanket. On the other hand, the Millet Women's LD Baikal 750 Sleeping Bag will keep you cozy during those warm summer nights without leaving you wet with sweat. The bag's Supermix fiber insulation uses hollow synthetic fibers to boost the warmth of the bag and to increase compressibility. For increased comfort, the hood and foot area are lined with a microfleece. The bag is available in both left and right zip options and includes a compression stuff sack.