We have been waiting for these water bottles to arrive for months now and they are finally here. We have a 12 oz version and a 17 oz version. There is a stainless steel liner and an acrylic outside so a nice monogrammed insert can be seen. BPA Free! They come with a stainless steel screw-on lid but a plastic hot beverage lid is also available. (Two cups in one! ) Fill with your favorite beverage and go! Take them to the gym, the office, on the road or anywhere...and they also fit in most vehicle cup holders. They make great Teacher Gifts!