The Mountain Hardwear Laminina range of sleeping bags are designed especially for Women & use their own Thermal Q synthetic filling which is almost 15% warmer for its weight than the nearest competitor. Thermal Q mimics natural down by using stiffer fibres to form a honeycomb & softer fibres to fill in the gaps. This means that the insulation in this Laminina sleeping bag lofts better, traps more air, compresses better & is lighter than just about any other synthetic filling. Mountain Hardwear have engineered this womens bag to be warmer with increased zoned insulation to ensure maximum performance & comfort. Laminina sleeping bags have the best pack size of just about any synthetic sleeping bag, offering the sort of weights & pack sizes normally associated with more expensive down filled bags. Thermal Q insulation is completely hydrophobic & cannot absorb water so it dries exceptionally quickly & still provides warmth if the bag gets soaked. To ensure all their wonderful filling stays in place Mountain Hardwear have developed a welded construction that laminates (Laminina, get it?) the outer fabric to the filling therefore eliminating the cold spots normally associated with traditional stitched through construction. This clever technique creates warmer bags with less weight that last longer & pack up smaller. This regular version of the Laminina 20 is designed to accommodate women up to 55 (165cm) tall. Designed with a comfort mummy shape to make it comfortable yet efficient & a full length zip with double sliders to allow for ventilation & zipping together with another Lamina bag. Once you are safe inside the tailored hood & face gasket effectively block cold drafts to keep all the heat inside & the foot box has been shaped to allow a natural & roomy sleeping position. The insulation is protected by a tough & lightweight nylon face fabric & the lining is a soft wicking polyester for increased comfort & performance. A small zipped internal pocket secures your essentials & is placed at shoulder level for easy access. The comfort rating of this bag is -7 to -12ºC, this is based on the assumption that you will be wearing light clothing, & sleeping on a good quality insulating mat inside a tent. This is the only measure of warmth that we recommend you use. Please also bear in mind that temperature ratings are subjective & can be hugely affected by many factors such as your health & metabolism, how much you have had to eat or drink, how active you have been, humidity & altitude, the type of shelter used & whether you are using a suitable insulating mat. Your sleeping bag is only as good as the mat thats beneath it, we recommend EXPED or Thermarest mats for comfort & insulation. Comfort mummy cut efficiently maximises weight without constriction Proprietary, welded Lamina construction enhances loft & eliminates cold spots Thermal.Q fill is soft, lofts well, compressible, & durable Durable, lightweight nylon shell with DWR treatment repels water Soft polyester lining wicks away moisture Full length zip with double sliders for versatile ventilation Comfort Footbox follows natural foot position for maximum warmth & comfort Face gasket & tailored hood comfortably block drafts at the hood opening & seal in warmth Internal zippered pocket at shoulder for storage Stuff sack & mesh storage bag included