Award winning design features double-walled insulation to keep drinks cold for up to 24 hours or hot for 12, antimicrobial drinking surfaces, and a soft rubber base for a silent put down. 100% leak proof. We recommend cleaning your bottle after each use with hot soapy water, please do not leave the bottle to soak. For a very thorough clean please use bicarbonate soda with water. When not using your bottle, we recommend storing it without the cap on. 500ml – 7.5cm wide and 22cm tall. The weight of this bottle is 390g. 1 litre – 8.7cm wide and 28.9cm tall. The weight of this bottle is 485g. Like our original Chilly's Bottles, our Series 2 bottles are 100% leak-proof - and they come with a new, improved design. The o-ring seal in the lid is built in, which means that your bottle is sealed even more securely.