Insulating double-wall stainless steel Keeps liquids cold for up to 15 hours or warm for up to 8 hours Silicone spout top, offers free flow drinking Lid keeps spout covered and hygienic. Leak-free when lid is closed Silicone carry handle 500 ml/16.9oz Dishwasher safe, top rack only BPA, Phthalates, and PVC free