Tefal Genuine Glass Lid 16cm Brand new, unused. Compact storage. ★ The "butterfly" style, where the lid's knob folds, allows for compact storage without the knob getting in the way when stacking lids. ★ Glass lid allows you to see the contents. The glass lid allows you to check the cooking progress without opening the lid. ★ Stable silicone rim. The rim is made of silicone material and adheres closely to the pot body, providing a secure fit.