Hi ladies, I am very obsessed about not using plastic when it comes to food (BPA free products are full of other nasty chemicals - so big No No for me!) and I have been using Kleen Kanteen bottles (despite the fact that they have plastic lids) but I am trying to find a thermos style food container which will keep food warm for my daughter. Found this on Kickstarter recently - Forever Flask www.kickstarter.com/projects/1425032121/forever-flasktm-the-only-vacuum-flask-youll-ever-n - stainless steel, double wall, thermal vacuum insulated bottle and container. Looks like a very good option for keeping baby food warm or milk cold. What do you think about it? Shall I pledge?