Belgravia Caterpack Super Rigid 7 Inch 12oz Biodegradable Bowls (Pack of 50) 3866 ? Belgravia Caterpack Super Rigid 7 Inch 12oz Biodegradable Bowls (Pack of 50) 3866 A stronger and more environmentally-friendly alternative to paper plates and bowls, these Super Rigid Bowls are made from 100% biodegradable non-woven fibres. They are super strong and liquid resistant, therefore able to hold much more than paper alternatives without compromising the shape or integrity of the bowl. Fully-biodegradable, they reduce waste and improve environmental standards in the workplace. They can be used in the microwave or frozen without issue, but are still disposable, reducing the amount of washing-up needed. This pack of 50 bowls is great value for money and has clear advantages over paper disposable or crockery bowls.