Down Sleeping Bag – Sonder-10 FIRBANK


The Sonder-10 is ultralight (786g in small), warm( -4° Female lower limit of comfort, -10° male lower limit of comfort) and compact (17cm by 20cm, compressed small size), developed specially for Firbank Grammar school students.


The Sonder-10° Male lower limit of comfort, Female lower limit of comfort -4°C, is specially made for Firbank Grammar school students. A fantastic ultralight (786g in small) and warm all rounder built from the highest quality fabrics and ethically sourced down, ensuring a comfortable nights sleep throughout cold climate conditions.


  • Filled with ethically-sourced 800-850 loft down is light, warm and compressible
  • DWR (durable water repellency) treatment is applied to the down (making it hydrophobic) for better performance in damp conditions
  • 10-denier Vapour Vent® fabric is breathable, soft to touch and lightweight
  • Tapered rectangular design is comfortable and unrestrictive
  • Uses durable YKK® zips and has a separate foot zip so the bag can be opened fully
  • Hood with elasticised drawstring
  • Includes compression stuff sack
  • Temperature rated in accordance with ISO 23537-1, the international standard for sleeping bag temperature ratings


  • Size: Small 173 cm, Regular 183 cm, Large 195 cm
  • Weight: Small = 786g, Regular = 840g, Large 909g
  • Materials: 10-denier Vapour Vent®
  • Colour: Blue/Grey
  • Female lower limit of comfort -4°C, Male lower limit of comfort: -10°C, For more information on temperature ratings refer to
    ISO DIAGRAM Camplist 10 SEP 2023 v1
  • Filled and finished in Australia

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Size - Equipment: Small, Regular, Large
Exclude From All Products: True