Milton Boxer Thermos Vacuum Flask with Cup, Rust This 1.8 Liter flask made with double wall vacuum insulation for maximum temperature retention, hot or cold is effective at keeping liquid hot or chilled for 24 hours Two screw-on lids double up as cups with handles Comes with a comfortable handle to hold Made from food grade virgin plastic, odorless and hygienic This vacuum flasks are perfect for outdoor family get-togethers. Leak proof and fully packable