Key Features Design in orca black Wide mouth design for easy filling Triple walled for ultimate insulation 530 ml capacity Environmentally friendly, non-toxic and BPA free This water bottle in a deep black is a stylish travel companion! An ultra strong coating gives it such a great feel in the hand and the stainless steel walls and a copper coating inside the vacuum are made to perform. It keeps drinks hot for 12 hours or cold for 24 hours. Good for you and good for the planet!