The Heatbox is a self-heating lunchbox that uses steam

This Self-Heating Lunch Box Steams up Your Meal Anytime, Anywhere

Steambox: The Self-Heating Lunchbox by Steambox » FAQ — Kickstarter

The Heatbox is a self-heating lunchbox that uses steam

Heatbox, the Self-Heating Lunch Box, Heats Your Lunch on the Go

Steambox. Enjoy hot food anywhere, anytime. Up to 3 meals per charge. Autonomous steaming technology. Leak- and dishwasher proof. BPA-free & food

Steambox®

A Self-Heating Lunchbox & Other Bright Ideas - Inventors Digest

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Steambox: the self-heating lunch box - DesignWanted : DesignWanted

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PRESSURE RELIEF VALVE: Equalizes pressure caused by steam and altitude to prevent vacuum and ensure easy opening. ON-DEMAND CONVENIENCE: Simply Double

Hot Bento – Self Heated Lunch Box and Food Warmer – Battery Powered, Portable, Cordless, Hot Meals for Office, Travel, Jobsite, Picnics, Outdoor