What are sleeping bags on the iss made of?

Question: What are sleeping bags on the iss made of?
- Keywords:
  material,
  sleep
Asked by Rosiebunny to Kirsty, Charlie 🚀 on 23 Jun 2016.
- Kirsty Lindsay answered on 23 Jun 2016:
  
  The sleeping bags are very similar to sleeping bags to get on Earth, except that they have a hood to stop your head bobbing about
  Here is some more information on sleeping in space from ESA kids
  https://www.esa.int/esaKIDSen/SEMAIP6TLPG_LifeinSpace_0.html

Question: What are sleeping bags on the iss made of?