Kit includes Mya Joy breast pump, AC power adapter, dual HygieniKit® milk collection system, CustomFit™ flanges (25mm, 28.5mm), two extra valves (for HygieniKit), two extra diaphragms (for HygieniKit), how-to guide and tote bag This electric breast pump is compatible with Ameda's HygieniKit milk collection system, a true closed system that helps protect breast milk from backing up into the tubing and prevents the system from potential contaminants like bacteria, viruses, and mold growth Hospital-level durability with two modes of pumping: single or double pumping Lightweight and battery-operated for on-the-go pumping Adjustable settings for comfortable pumping with a wide range of suction and speed settings, functions, and flange sizes Compact size and built-on clip, to hook onto a waistband or purse, makes it easier to pump anywhere Operates at fewer than 45 decibels which allows for quiet pumping anywhere Package/UOM: Each (EA); manufacturer item 131W50; UPC 810725025086.