The KSB 35 sleeping bag masterfully blends lightweight performance with versatile comfort for cooler nights. Featuring 650 fill power down on top for superior warmth and synthetic fill below for moisture resistance, it delivers an exceptional warmth-to-weight ratio perfect for backcountry adventures or backyard camping. Innovative Length Locks™ allow you to customize the bag's size, reducing dead space and boosting thermal efficiency. The two-way zipper opens the foot box for temperature regulation on warmer nights, while fully unzipping transforms the bag into a generous blanket for versatile use. Praised by Gear Hacker for packing small and including valuable features found in quality sleeping bags, the KSB 35 proves that lightweight doesn't mean sacrificing comfort. Whether you're counting ounces on the trail or simply want a reliable, adaptable sleeping system, this thoughtfully designed bag delivers the perfect balance of weight, warmth, and functionality for three-season adventures.