Down and feather is a totally natural product, harvested commonly from duck and geese. The feathers are from the wings and back of the bird and add loft and weight to the quilt. The down is from the chest area and is a natural insulator. All Logan & Mason down and feather quilts are constructed in walled cassettes to ensure even distribution and the 300 thread cotton Japara covers mean no feathers can poke through and escape.