Siren™ Down Quilt-Style Sleeping Bag

A Warm-Weather Ultralight Quilt


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The Details


The popular Siren™ has been updated in 2019 with a vertical baffle structure, lighter weight and smaller pack size. This 45°F backless quilt is ideal for ultralight treks where weight and versatility matter; it takes away everything extra without taking away the promise of a warm and draft-free night's sleep. Constructed using the highest end fabrics and premium 850 fill power down, Siren™ is one of the lightest quilt-style bags on the market.

The backless design shaves weight, and the stretch footbox anchors around pad and keeps it securely in place. A cord system lashes around the underside of the pad to accommodate a variety of pad sizes.

Best Use
  • Ultra-fine 10D Nylon Micro Ripstop offers silky smooth comfort.
  • Premium 850 FP down is ultra-packable, hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) Certified for traceability throughout the supply chain.
  • Vertical baffle structure conforms to your body.
  • Backless design shaves significant weight.
  • One of the lightest quilt-style bags on the market.
  • Stretch footbox anchors pad securely in place.
  • Cord system lashes around a variety of pad sizes for a secure, draft-free sleep.
  • Protected by the NEMO Lifetime Warranty.
What's Included
  • Compression stuff sack
  • Mesh storage bag

& Sizing

Capacity 1
Minimum Weight 1 lb , 5 oz / 600 g
Packed Size 14.0 x 5.5 in dia / 35 x 14 cm dia
Temp Rating 45F / 7C
Fill Type Down
Fill Weight 0 lb , 10 oz / 285 g
Fits Up To 6' / 183 cm
Shoulder Girth 53 in / 135 cm
Hip Girth 48 in / 122 cm
Knee Girth 39 in / 99 cm
Compressed Volume 2.16

& Materials

Shell Fabric 10D Nylon Ripstop w/ DWR
Lining Fabric 10D Nylon Micro Ripstop w/ DWR
Color Aluminum / Lightning
Stuff Sack Compression stuff sack, Mesh storage bag
Insulation 850 FP Down