From Spanish brand Roll´eat.
The features of Grab'n'Go:
- The inner layer of TPU plastic membrane is BPA free, heat resistant up to 120 C, completely water proof and heat-sealed - no water leakage
- Come with plastic buckle strap, can roll to your preferred size
- can contain several bread or steamed buns, salad with dressing, even soup (no leakage)
- can hook it on backpack, easy to carry
- machine washable
You can see how it works with this youtube video.