Siddharth Poly Foam Private Limited offers Oxygen Feather Pillow. Siddharth Poly Foam Private Limited is an ISO 9001: 2000 registered organisation. The Oxygen Feather Pillow increase airflow, creating the conditions for more restful, restorative sleep without sacrificing comfort. The Oxygen Feather Pillows are made of 100% hollow-polyester libber which is super soft and have superb comfort.