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.

• 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