A unique food-grade silicone lid that transforms a Sierra cup into a kettle. 【Applicable Models】: Sierra Cup S-220, BKS-220; Deep Sierra Cup S-360, BKS-360; Deep Sierra Cup S-369, BKS-369
【None liquid leakage】Excellent flexibility and adhesion, securely fitting the cup's rim to prevent liquid leakage.
【Crescent-shaped Opening】A convenient semi-circular opening allows easy addition of water or tea leaves without removing the lid.
【Easy Pour Spout】he lid is designed for smooth liquid flow, reducing spills during use.
Weight:1.8 oz / 52g;Thickness:0.05 inch / 0.13cm;Material:Silicone (Food-grade silicone)
It is microwave safe, freezer safe, and dishwasher safe.