Remember the trapezoid from 10th-grade geometry? Turns out, this funky ol’ shape is ideal for helping sleeping bag baffles retain heat. The trapezoidal baffle construction improves on our best-selling Cosmic 20 sleeping bag—and it’s just one of the reasons the Kelty Cosmic Down 20 is still our favorite three-season superstar. We also love the natural fit foot box for happier feet, and a PFC-free water-repellent coating for a healthier environment.

Features

• Innovative trapezoidal baffle construction = thermal efficiency
• Lightweight and warm 550 fill down
• Environmental and health-friendly C0 and PFC-free DWR fabrics
• Zippered internal stash pocket for headlamp, cell phone or actual… stash
• Buttery-soft and durable 20D Nylon shell fabric
• Zipper draft tube with anti-snag zipper design makes it easy to get in and out
• Dual slider for ventilation with locking zippers
• Natural fit spacious footbox = more room to wiggle your toes
• Comes with stuff sack for quick departures

Specs

Regular

• ISO Extreme Rating: -11° / -24°C
• ISO Limit Rating: 21° / -6°C
• ISO Comfort Rating: 32° / 0°C
• Fits to: 6' 0" / 183 cm
• Weight: 2 lb. 10 oz. / 1.19 kg
• Fill weight: 16.37 oz. / 464 g
• Stuffed size: 8" x 13" / 20 x 33 cm

Long

• ISO Extreme Rating: -11° / -24°C
• ISO Limit Rating: 21° / -6°C
• ISO Comfort Rating: 32° / 0°C
• Fits to: 6' 6" / 198 cm
• Weight: 2 lb. 15 oz. / 1.33 kg
• Fill weight: 18.8 oz. / 533 g
• Stuffed size: 8" x 14" / 20 x 36 cm

Materials

• Insulation: 550FP Duck Down
• Shell material: 20D 400T Nylon
• Liner material: 50D 300T Polyester