Outer material is 240TAFFETA, inner material is synthetic down
The outer material is 240TAFFETA so the fibers are finely woven and
You can sleep outside in the winter without escaping heat
It is also durable and long lasting quality.
The interior material is made of synthetic down like feathered winter birds that are cool in the cold.
Micro Prima has excellent heat retention, moisture retention, and light weight.
In addition, it is odorless and non-allergenic and safe to use.