U.L.Super Stretch Down Hugger

Lightweight and amazingly comfortable, this four-season sleeping bag features Montbell's patented Super Stretch System and Exceloft insulation. This is the bag for you if you are going to constantly be in a wet environment and want the added security of a synthetic bag. Exceloft insulation absorbs less than 3 percent of water when wet, therefore keeping you warmer when your bag gets wet. All bags use a lightweight durable high-density nylon taffeta.

Construction | Super Stretch System

MontBell's patented Super Stretch System uses horizontal elastic stitching to draw the insulation closer fit to your body and keep heat in the bag - where it belongs. This stops drafts, eliminates cold spots and improves the bag's thermal efficiency by reducing the volume of air your body needs to heat.
With the Super Stretch System, you'll experience a freedom of movement like never before. The durable, elastic stitching gently stretches with you as you move. The result is a bag that keeps you toasty warm while accommodating changes in position. We have worked to create the ideal balance close fit and exceptional expandability - now you can kick back, read a book, do your yoga or simply get a good night's sleep.

15-denier Ballistic Airlight Nylon

15-denier Ballistic Airlight™ hollow fiber calendared nylon: All MontBell sleeping bags feature 15-denier Ballistic Airlight™ in both the shell and the lining. This new nylon replaces the 15-denier solid fiber nylon used previously.

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