Lark 10 UL Sleeping Bag

The Feathered Friends Lark 10 UL is a high-performance 10°F (-12.2°C) sleeping bag featuring 950+ fill power down and a water-resistant Pertex® shell. A longtime favorite for its versatility, it offers the perfect balance of warmth for cold sleepers and lightweight packability for three-season adventures.

Check out my review of my Feathered Friends sleeping bag here!

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Feathered Friends Lark 10 UL Sleeping Bag

The Lark 10 UL is the men’s version of my Petrel UL 10 sleeping bag

Key Technical Features

  • Premium Insulation: Packed with 950+ Fill Power Goose Down for maximum warmth and compressibility.
  • Weather Protection: The shell uses Pertex® Endurance® 10 denier water-resistant and breathable fabric.
  • Heat Retention: Features a full draft collar and a generous draft tube to seal in body heat and prevent cold air from seeping past the zipper.
  • Smart Design: Includes continuous baffles that allow you to shift the down to where you need it most, and a trapezoidal footbox that lets your feet rest naturally.

Technical Specs (Regular Size)

  • Temp Rating: 10ºF / -12.2ºC
  • Average Weight: 1 lb 15.3 oz / 887 g
  • Ideal Sleeper Height: Fits up to 6′ 0″ / 183 cm
  • Packed Size: 11L
  • Origin: Made in Seattle, USA

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