Vacuum food containers, stainless steel:

http://www.ikea.com/us/en/catalog/products/40288354/

http://www.amazon.com/Stanley-Utility-Vacuum-Food-ounce/dp/B00408LQN8/ref=sr_1_5?s=sporting-goods&ie=UTF8&qid=1447644596&sr=1-5&keywords=Stanley+Vacuum+Food+Jar

http://www.amazon.com/exec/obidos/ASIN/B0017IFSIS/metafilter-20/ref=nosim/

http://www.amazon.com/Stanley-Classic-Vacuum-Food-Jar/dp/B00VREBS0O