With its advanced, gentle compression technology, the Double Electric Breastfeeding Companion by Simpleese is designed to help minimize tugging and pinching while gently elicit milk expression. The inner and outer flexible breastcups work together to mimic baby's tongue and suckling motions to encourage let-down. Includes; 4 collection bottles, 4 collection bottles, Microfiber Tote Bag, Insulate Cooler with 2 Ice Gel Packs and Wet Storage Bag.