The 1L Classic DWS Carbonating Bottle Black for Soda Stream (Twinpack), Pack of 2 is a set of reusable plastic bottles designed for use with Soda Stream machines. With a round shape and a sleek black finish, these 1 liter bottles are dishwasher safe and made of BPA-free material. Perfect for making homemade sodas or juices, this pack of 2 bottles is easy to use and maintain, making it a convenient addition to any kitchen or home bar.