Yumbox is made using all food-safe materials. It is BPA-free and phthalates-free. Yumbox is compact & lightweight.

Yumbox plastic bento boxes are dishwasher safe. Top rack only. Please remove it before the heat dry cycle. Yumbox is tested at a temperature of 65C/149F, 110 min. cycle. Yumbox is made with ABS (exterior box), Tritan (tray), and silicone (seal). Yumbox Presto Stainless Steel bento box and Zuppa Stainless Steel thermal jars are hand wash only.

Special Care instructions for the silicone seal: Please be sure to empty contents each day, hand wash with warm soapy water and thoroughly dry your Yumbox before storing. Also, if you live in a damp or humid environment, leave Yumbox ajar, not sealed when storing to avoid trapping moisture. If you pack oily foods regularly, coat with a baking soda paste once a week overnight to avoid build-up.