From Alaskan expeditions to alpine missions in the Cascades and stints on the Appalachian Trail, Mountain Hardwear's Women's Lamina 30deg sets the bar for synthetic bags. Lightweight Thermal.Q insulation was made for nights out in damp climates or wet conditions. And paired with their innovative offset welded construction, it's a game-changer in eliminating those cold spots your old sleeping bag always had.