Sierra Designs

Synthesis 20 Sleeping Bag: 20F Synthetic

What Our Gearhead® Experts Are Saying:

"This bag is a great option for 3-season camping and backpacking trips. The synthetic insulation keeps me warm, even when the conditions are damp, and the self-sealing foot vents are a lifesaver when I need quick ventilation. I also love the dual zipper design for easy entry and exit. It’s lightweight, durable, and super practical for any outdoor adventure."

The Sierra Designs Synthesis 20 Sleeping Bag is the ultimate companion for chilly nights in the great outdoors. Designed with 20-degree warmth and SierraLoft synthetic insulation, this bag ensures cozy comfort while retaining its loft and performance in damp conditions. Whether you're trekking through alpine forests or camping under the stars, you’ll appreciate the reliable warmth and thoughtful features packed into this versatile sleeping bag.

The dual zipper system makes it easy to hop in and out of the bag, while the patented self-sealing foot vents provide instant cooling when the trail’s effort catches up to you. Crafted from lightweight and durable 20D nylon ripstop, the Synthesis Sleeping Bag is designed to handle the wear and tear of backpacking adventures while keeping pack weight to a minimum. With its mummy shape and draft collar, this bag seals in warmth where it matters most, giving you restful sleep for your next day of exploration.