Sea To Summit Alpine APIII Sleeping Bag

The Alpine down sleeping bag is the beefiest sleep refuge within our sleeping bag range and is designed for high altitude expeditions and sub-zero temperatures. It’s filled with 850+ loft RDS certified ULTRADRY Down and uses 3D NanoShell for exceptionally effective moisture management. Other well thought out and technically designed features include a side zip draft tube, neck draft tube with dual elastic adjustment to retain warmth, YKK #5 two-way zipper and a medium sized internal zipped pocket for electronics or essentials. This contoured mummy shaped cocoon is perfect for high altitude base camps, winter backpacking, snow camping, alpine climbing expeditions, and anywhere you need full-scale protection from the cold and a comfortable night on the mountain.