Flexible feathers are beautiful, soft and fluffy and one of the most versatile of ostrich feathers. Flexible feathers are popular choice for clothing designers, costumes, and feather centerpieces. Flexible ostrich feathers are most known for their soft flexible stem. They have a short quill, rounded tip, full tight knit barb typically fluffy compared to other ostrich feathers. Ostrich feathers are a popular way of creating beautiful costumes typically seen at Carnival Rio De Janeiro and feather centerpieces.