Stanley The Iceflow Bottle Flip Straw 2.0 0.7L/24Oz Thermos

Hello, this model has the feature of keeping your drinks cold for 12 hours and icy for 48 hours with ice supplement.

Hello, yes The IceFlow Bottle Flip Straw 2.0 is made of high quality 18/8 stainless steel. The body, interior and exterior parts of the product are entirely made of steel. Regarding machine washing, I recommend checking the care instructions on the product page. Generally, stainless steel thermos cups can be washed in the dishwasher, but the manufacturer's recommendations may differ for the lid and straw parts. The product details should have that info. Happy to help if you have any other questions.

Hello, The IceFlow Bottle Flip Straw 2.0 0.7L thermos has a capacity of 0.7 liters, so it may be a little big for the side mesh pockets of standard school bags. I recommend checking the width and depth of the side pocket of your bag for a perfect fit — detailed dimensions of the thermos, including its height and base, are available on the product page. So you can see in advance if it will fit comfortably in your bag. If you want to put it in the water section, it would be better to compare it with the dimensions of that part.