Ascent Down Mummy Sleeping Bag (25°F)

The Sea To Summit Ascent™ down mummy sleeping bag redefines what versatile means in a sleep system. Complex construction and high-quality down keep you warm when it’s cold outside, while the triple-zipper Free-Flow Zip™ system ensures you stay cool and ventilated when the weather warms. Shaped to allow a natural sleeping position for comfort, the Ascent is light and compact enough to go everywhere your adventures may take you. Highlights Best Use Backpacking Performance 2.5 Season: 25°F (comfort range 25°F to 70°F) Shape More room between hips and knees to allow you to sleep in a natural position without compressing the down insulation and creating cold spots. Far more comfortable than narrow mummy bags for most sleepers. Features ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS) Shell Fabric: Lightweight 20D Nylon Shell Free-flow zipper system: full-length YKK® #5 main side zip, half-length opposite side zip, and foot zi