Foldable water bottle by AONIJIE available in 170 ml, 200 ml, 250 ml and 500 ml sizes. Constructed from TPU with a capacity option of 0.5 L (about 16.91 fl oz). Weights vary by size: approximately 0.32 oz, 0.95 oz and 1.16 oz for the smallest to largest options. Recommended operating temperature range 32 °F to 104 °F.