Penguin Nano 40 Sleeping Bag

The Penguin 40 is the lightest of our semi-rectangular bags for one or two person use. Ideal for warm weather adventures, the Penguin 40 performs equally well as a roomy bag for one or a two person system when coupled with the Penguin Groundsheet. Unzip the bag and open it flat for a convenient travel quilt or attach an optional hood and you’re ready for a solo excursion. Cross-country cyclists have long favored the Penguin 40 dual sleep system for its flexibility across a range of temperatures and as a means to conserve weight and volume while offering a comfortable respite for two at the end of a long day.

Nano: Schoeller® NanoSphere® 20 denier water-resistant/ breathable fabric.

Availability: Select Color & Length for Availability

Availability Information

From: $389.00

* Required Fields


  • Top-stitch, baffled construction
  • Wrap around separating YKK #8 zipper allows the bag to open flat
  • Dual draft tubes prevent loss of heat when coupled with a Groundsheet
  • Drawstring closure
  • Groundsheet compatible
  • Optional zip on hood(s)
  • Stuff sack and cotton storage bag included


Regular Length
Fits up to 6' 0" | 183 cm

Long Length
Fits up to 6' 6" | 198 cm

Additional Info

Length Reg 6' 0" / 183 cm | Long 6' 6" / 198 cm
Dimensions 64" / 61" / 48"
Fill Power 900+ Goose Down
Fill Weight Reg 17.3 oz / 492 g
Long 18.6 oz / 528 g
Lining Fabric Pertex® 30 denier nylon taffeta
Country of Origin Made in Seattle, USA of imported materials
Packed Size 7" x 12" | 11L
Average Weight Reg 2 lb 3 oz / 1007 g
Long 2 lb 6 oz / 1078 g
Sleeping Bag Shell Fabric Schoeller Nanosphere®
Temperature Rating 40ºF / 4.4ºC
Zip Side Either Side

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