The Zevex Backpack for Enteralite Infinity or Enteral Pump is a durable and reliable feeding pump backpack designed to securely hold 500mL bags. With a sleek black color and a manufacturer's warranty, this unit is ideal for healthcare professionals looking to efficiently and effectively administer enteral nutrition. The PCK2001 model by Zevex ensures a hassle-free experience for both patients and caregivers, making it a must-have in any healthcare setting. This bag is well used, but still has a lot of life left. The Velcro on the inside could be better and may need to be replaced or stronger ones added. All the zippers work great Also sales are final. Look at pictures carefully. They are part of the description. Ask questions before bidding. Smoke free home.