Snowbird™ Base 700 Down Mummy Sleeping Bag 21°F/ -6°C - Blue / L

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Snowbird™ Base 700 Mummy Sleeping Bag, versatile mummy sleeping bag with 650FP duck down and multi-mode zipper system — offering flexible ventilation options for backpackers who demand warmth without compromising on convenience. Key Features 650FP High-Quality Duck Down Insulation：Filled with 90% 650FP duck down, independently tested and certified with 683 fill power — delivering reliable warmth-to-weight performance for 3-season backpacking adventures. Multi-Mode Zipper System for Flexible Use：Innovative 3-way zipper design allows side-open, full-open, and foot-out modes — giving you quick access, maximum ventilation, or extra breathability without fully unzipping, adapting to changing conditions throughout the night. Professional Warmth Design：Features an insulated hood for head and neck warmth, wind-blocking strips to keep out cold drafts, a three-dimensional foot box for added comfort, and an inner pocket to protect your phone from cold temperatures. Advanced Down Retention Technology：Precision sewing with box-baffle construction and independent compartments prevent down from shifting or clumping — ensuring even distribution and consistent warmth without cold spots. Anti-leakage stitching keeps down securely in place. Compact Packability for the Trail：Includes three storage solutions — storage bag for loft preservation, stuff sack for travel, and compression sack for space-saving packability — so you can choose the right balance of volume and protection for your journey.