Looking for a roomier sleeping bag that adapts to changing temperatures? The Trek Sleeping Bag from Sea To Summit offers the perfect blend of comfort and versatility for cool-to-warm conditions. Thanks to the Free-Flow Zip system, you can easily adjust ventilation—from a snug sleeping bag to a fully open quilt. You can even snap it around your shoulders, unzip the footbox, and wear it around camp. Filled with RDS-certified, 650+ fill power duck down and treated with non-PFAS Ultra-Dry Down, it provides reliable warmth even in damp environments. Trek Down Sleeping Bag Features 650+ fill power duck down, RDS-certified and treated with non-PFAS Ultra-Dry Down for reliable warmth even in damp environments Polyester shell with water repellent finish helps block wind and moisture Soft polyester lining ensures next-to-skin comfort Free-Flow Zip System allows for versatile ventilation and multiple configurations—from full coverage to quilt-style Semi-rectangular, women’s-specific shape provides extra room and tailored comfort for camping and travel Backed by the Sea to Summit Lifetime Guarantee for long-term durability and peace of mind. TECH SPECS Insulation: RDS certified, 650+ non-PFAS Ultra-dry down Shell fabric: 20D polyester, DWR treatment
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