For hot and cold: Hydro Flask offers the 40 oz Lightweight Wide Flex Cap, a thermos bottle with a sleek design and a capacity of 1182 ml. Thanks to the TempShield vacuum insulation, the bottle keeps hot drinks warm for up to 12 hours and cold beverages cool for up to 24 hours. The 18/8 stainless steel used is taste-free, BPA-free, and phthalate-free, ensuring a worry-free drinking experience. This version with a wide-mouth opening is perfect for adding ice cubes; additionally, the bottle is easier to clean and can even be used with most outdoor water filters.