Single Fold Portable Wheelchair Scooter Ramp with Carry Handle and Travel Bag, 5 Feet Long Power Supply Set The GCE Zen O Accessory Bag SFF3003 The GCE Zen O Accessory Bag is the original storage pouch for Zen O and Zen O Lite portable oxygen concentrators The AirSep Focus Battery Case is great for carrying and storing your additional AirSep Focus battery The Wheelchair and Scooter Ramp by Drive Medical is designed for transitioning a wheelchair or scooter from one surface height to another This ramp was especially designed with perforated slots to keep water from collecting on the ramp and ensuring users safety while in use