Big Feet Pajamas navy micro-polar fleece footed pajamas are one of the favorites at Big Feet! These onesies are made of 100% micro-polar fleece and are so durable, they will last for years. Also, the fabric is higher quality than other fleece pajamas and will not pill when taken out of the dryer. These footie pajamas button up the front and have non-slip soles. They even have a fun, drop seat option. Onesies have been featured and reviewed in media outlets all over the World.