These great bottles from silikids use the Evenflo Classic Clear glass nurser and the custom silikids silicone sleeve. The innovative sleeve allows baby to grab, hold and avoid slippage when feeding from the glass bottle. It is microwave safe, dishwasher safe and hypo allergenic. The translucent silicone sleeve allows you to see measurements and how much liquid still remains in the bottle. Includes Evenflo glass bottle Evenflo Classic Clear silicone nipple - slow flow Bottle Sleeve Cap