Big Agnes

Big Agnes Duster -9C Adjustable Kids Sleeping Bag

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  • Regular price $149.95
  • 2 available
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The Big Agnes Duster is an adjustable 3-season kid sleeping bag for kids from 4'5"- 5'5" tall. The fully customizable sizing system easily adjusts with a simple clip or unclip loop system! The Duster adjusts lengthwise but also adjusts on the sides to remove extra space! Finally, a bag that can grow with your child as they grow to make this one of the most economical sleeping bags for growing adventurers!

An integrated half-pad sleeve keeps kids on the pad and off the cold ground! A full feature mummy bag with all the options of an adult pad. M4 synthetic insulation with shingled construction and a draft tube and collar to seal out drafts. A contoured hood and bag allow it to drop over you to maximize insulation quality!

  • Requires a 20" sleeping pad!
  • Fits kids up to 165cm (5'5")
  • Weight - 1.30g (2lb 14oz)
  • Fill weight - 857g (30oz)
  • Stuff sack size 23X51 cm (9"X20")
  • 3 season rating -9C (15F)
  • Shell - rip-stop polyester with a water repellent finish
  • Lining- soft cozy polyester
  • Insulation - FireLine Core synthetic insulation in a shingled construction
  • Full integrated pad sleeve
  • Mummy shape
  • Zipper garage
  • No-Draft collar, No-Draft zipper, No-Draft wedge
  • Comes with a storage sack and stuff sack


Except for the warmest nights, our kids wear some form of base layer to wick moisture and keep them warm if they wiggle out. No cotton as it does not hold heat! Merino or a good synthetic base layer is best. If we expect a cold night we will bump it up to a fleece layer for added insulation.


We also allow a stuffy from home and/or a blanket. This gives a feeling of home and also takes up a bit of space to keep the bag warmer. If the bag is a bit long or wide stuff an extra blanket, jacket, or clothes to take up extra space.


The Big Agnes Sleeping bags DO NOT have insulation on the bottom where the sleeping bag connects with the sleeping pad! They are designed this way, a good sleeping pad on the bottom is needed for insulation! Like all sleeping bags, it is the sleeping pad that gives you the insulation. Insulation on the bottom side of sleeping bags tends to be compressed under your body weight and does not give you much insulation. Big Agnes has removed the bottom insulation to save weight and also allow more insulation on top where it is needed! 

If you have any questions about this design and how it works please contact us, we are always happy to answer questions!