PRODUCT DESCRIPTION: Ameda breast pumps are manufactured by Hollister Inc.A worldwide leader in home and professional healthcare products for over eighty years. Ameda breast pumps are used in most hospitals and chances are you will have the manual breast starter kit which can be converted to use with most Ameda breast pump. The Ameda Purely Yours Collection is similar to the Medela InStyle breast pump but more affordable. The Ameda Breast Pump Back Pack Kit Features: HygieniKit patented, viral barrier for your baby safety to prevent milk or mold forming in your breast pump machine or tubing. Manually adjustable suction and cycle speeds to control the rhythm for let-down and expression pumping to simulate baby nursing pattern. Microprocessor controlled to give you consistent pumping action for each suction setting . Piston pumping is more strong because of the rigid components and is more superior to diaphragm pump which degrade overtime. Heavy duty design and quality similar to hospital breast pump. Brushless motor will not wear out and more durable, long lasting. Integral battery compartment to hold 6AA batteries that are inside for portbability - not tethered by a battery pack that you may forget. Removable pump base and cooler with bottle holder to avoid spillage. Removable components make cleaning a breeze. Ameda Breast Pump comes with:Removable pump base with integral bottle holders for easy cleaning. Dual HygieniKit (FDA patented & confirmed). Black, Microfiber Carry All tote with Ameda detailing that easy to clean and durable. 110V AC power adapter with 6 ft cord. Milk storage guide magnet for your refrigerator for easy reference. Insulated, Cool N Carry Tote with: 3 cooling elements and 6 4oz bottles with lids. The Backpack Style includes the Ameda One-Hand Breast Pump for added convenience.