The filter net is made of cotton, and it is safe and non-toxic. It is suitable for siphon pot, alcohol light siphon pot, Belgian pot, and electric siphon pot. It is durable for long time use. Features: Made of top-quality cotton, safe and non-toxic, odorless and durable. The screen protector is suitable for siphon pot, alcohol light siphon pot, Belgian pot, and electric siphon pot. Durable: it can be used in 40 time, then replace it with new filter net. Easy to filter the residue, it is easy to use. It is the indispensable filter net for siphon pot. Specifications: Condition: 100% Brand New Material: Cotton Color: White Size: approx. 10.5*10.5cm/ 4.13*4.13in Weight: approx. 24g/ 0.84oz Package list: 10* Filter Nets Note: 1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.