Only known by testing.
Some suppliers will specify they know a fabric is down-proof, and sometimes only for down of specified quality, or they may say they don't know. At least one supplier is...
Type: Posts; User: DemostiX
Only known by testing.
Some suppliers will specify they know a fabric is down-proof, and sometimes only for down of specified quality, or they may say they don't know. At least one supplier is...