Silk Sleeping Bag liners - How much warmth do they add?
Lifeventure Ex Silk Travel Sleeper Mummy | Trekkinn
Lifeventure Silk Ultimate Sleeping Bag Liner Lightweight Travel and Camping Sheet to Use Alone or to Add Warmth to Sleeping Bag With Polygiene Odour Control,Black,Rectangle (185 x 90cm) : Amazon.co.uk: Sports &
Sleeping Bag Liner – Yay or Nay? - Heels In My Backpack