The lid is made of food grade silicone, 

It is safe, non-toxic, which is adequate for the rim under 10 cm.

Cold and heat resistant silicone from -20 ℃ to 120℃.

Press the Cute Figure design to make the lid stick to the cup tightly and isolate the dust.

It is fade-proof, anti-slipperiness, dust-proof and washable. 100% Eco-friendly silicone, which is easy to clean

Brand: Bone collection