The Mamajoo USb double breast pump and 2 pcs 150 ml gold feeding bottles are designed to meet the needs of new mothers. Operates as both single and double pump. There are 8 different levels of massage & 12 different levels of suction modes, totaling up to 20 level choices. With a lightweight design weighing 170 grams, the USB port on the breast pump is an indispensable tool for working mothers. Mamajoo Gold feeding bottles are resistant to hospital autoclave sterilization as their molecules do not easily dissociate even when exposed to very hot water. Mamajoo baby feeding bottles are made of PES raw materials permitted raw materials to produce baby feeding bottles in EU, USA. Whether you are at home, office or travelling, it allows you to express your milk directly to breast milk container which is included in the pack that converts into a baby feeding bottle easily so that you can feed your baby directly without the need of transferring your milk into another bottle. You can only wipe the Mamajoo pump motor unit with a damp cloth. You can wash the pump mechanical parts and milk storage containers in the dishwasher, then sterilize them with a Mamajoo sterilizer.