X-fibre Mummy Sleeping BagsWe have The Backside X-fibre Mummy Sleeping Bags too! X-fiber .7 denier synthetic down is here --- the smallest ultra-fine microscopic fibers available. This results in a lightweight insulation that is very compressible and warm. X-fibre micro-fibers are softer and finer than silk, creating a feeling smoother than down. X-fiber tears up the competition with an amazing 5 to 15 times smaller denier insulation.
X-fibre Mummy Sleeping Bags