The 350ml is the perfect snack size. Bigger than I originally thought it would be and so I use it for my breakfast (overnight oats, chia seeds and berries) but also a great size for fruit or biscuits etc. The stainless steel makes it taste cold and refreshing, love that it’s low tox and it never leaks even when thrown into my backpack on the way to work in the morning. Good price and didn’t even notice anything to make it factory seconds. Wish the 350ml was in stock to order a few more! Also a nice pastel blue. Thanks!