Remember the trapezoid from high school geometry? Turns out, this funky ol' shape is ideal for helping sleeping bags retain heat. Kelty's trapezoidal baffle construction is just one of the reasons the Cosmic Down is still the favorite three-season superstar. Everyone also loves the expanded natural-fit footbox for happier feet, zippered stash pocket and fully recycled fabrics and PFAS-free DWR treatment. The Cosmic Down is the total package.

• Trapezoidal baffle construction provides enhanced thermal efficiency
  
• Lofty, lightweight and warm 550 Fill Down
  
• Buttery-soft and durable, fully-recycled shell and liner fabrics with PFAS-free DWR
  
• Zippered internal stash pocket keeps your favorite devices close at hand
  
• Full draft tube and collar retain heat and enhance comfort
  
• Quad-stitch anti-snag zipper makes getting in and out easy
  
• Dual locking sliders for venting versatility
  
• Expanded, natural fit footbox = more room to wiggle your toes
  
• Stuff sack included, for quick and easy departures
  
• Insulation: 550 Fill Down
  
• Fabric Primary/Body: Recycled 20D Nylon Taffeta
  
• Fabric Secondary: Recycled 50D Polyester Taffeta
• Temperature Rating: 5°F / -15°C
  
• Bag Shape: Semi-Rectangular
• Fits to: 6' 0" (Regular), 6' 6" (Long)
  
• Fill weight: 39.5 oz (Regular), 41.6 oz (Long)
  
• Stuff Sack Size: 10" x 19" (Regular), 10" x 18" (Long)
  
• Length:  78 in (Regular), 84 in (Long)
  
• Shoulder Circumference: 62 in (Regular), 64 in (Long)
  
• Hip Circumference:  57 in (Regular), 60 in (Long)
  
• Foot Circumference: 46 in (Regular), 52 in (Long)
• Weight: 4.34 lb (Regular), 4.5 lb (Long)