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The Heat Zone sleeping bags by RockWater Designs are built with top-of-the-line Diamond Polytek ripstop material and lined with Pongee Polysoft synthetic fabric.
These slumber sacks are well insulated and super compact! The UltraLite series are no-frills sleeping bags, basic rectangular design that has been stripped down for low weight and high compactibility.
See our Sleeping Bags - 101 blog for three of the most often asked questions!