Designed in a tapered, mummy shape, the Therm-a-Rest Parsec 20 Degree Down Sleeping Bag is optimal for low temperatures. It is an optimal choice for adventure enthusiasts who want a warm, cozy, comfortable, and lightweight bag while trekking, mountaineering, and backpacking in the backcountry. Efficient and compressible Nikwax Hydrophobic insulation boosts warmth without added weight Filled with easy to dry down material, absorbs less water Heat-Mapped Zoned Insulation delivers an elite warmth-to-weight ratio YKK anti-snag zipper prevents accidental tears and eases entries and exits SynergyLink Connectors mate the bag to your sleeping pad, preventing drafts and cold spots GRS-certified 100% recycled fabrics are eco-friendly while being lightweight, soft, and durable Loops to attach the blanket provides comfort and holds the blanket to its position Compression and storage sack included