The Lamina 30 is Mountain Hardwear's warmest synthetic sleeping bag, designed to lock out cold. It features compressible Thermal.Q insulation for light and lofty warmth. Mountain Hardwear Lamina welding holds insulation in place, without creating cold spots caused by traditional stitching. The result is bags that are warmer, lighter, loftier and more durable over the long haul. Slightly wider, winter mummy cut. Proprietary welded Lamina construction enhances loft and eliminates cold spots. Thermal.Q insulation is soft, compressible and durable. Durable, lightweight 40D micro ripstop 100% nylon shell has DWR treatment to repel water. Soft, 40D polyester taffeta lining wicks away moisture. Full length, 8 zipper with double sliders for ventilation. Comfort footbox follows the natural foot position for comfort. Face gasket and tailored hood block drafts and seal in warmth. Zippered pocket at shoulder for storage. Available in regular and long lengths, left and right zip.