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Nemo Siren 45 Sleeping Bag

sku# 146558
Nemo - Siren 45 Sleeping Bag
Model Info
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Product Info

The Nemo Siren 45 Sleeping Bag beckons for an irresistible night's sleep. This unique take on your traditional duvet utilizes a buttery soft nylon fabric filled with down for indistinguishable-from-your-bed comfort. Made with a slightly oversized mummy shape and stretched foot box, you can rest happily on your side, stomach, or starfish-style - whatever floats your boat!

Product Details


Shell10D Nylon Ripstop with DWR

Lining10D Nylon Micro Ripstop with DWR

Ultra-Fine 10D Nylon Micro Ripstop Offers Silky Smooth Comfort

Mesh Storage Bag


Premium 850 Fill Power DownUltra-packable, hydrophobic, PFC-free and 100% Responsible Down Standard Certified for traceability throughout the supply chain.

Fill Weight10 oz / 285 g


Packed Size14.0 x 5.5 in dia / 35 x 14 cm dia

Fits Up To6' / 183 cm

Shoulder Girth53 in / 135 cm

Hip Girth48 in / 122 cm

Knee Girth39 in / 99 cm

Compressed Volume2.16


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 SystemLashes around a variety of pad sizes for a secure, draft-free sleep.

IncludesCompression stuff sack, mesh storage bag.


  • Insulation: Down
  • Temperature Rating: 45
  • Shape: Mummy
  • Stuff Sack Size: 14.0 x 5.5
  • Warranty: Limited Lifetime

Other Notes

Nemo products can only be shipped within the United States



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