The cup lid is made of sugarcane bagasse, hence it can be bio-degraded and composted in nature within 90 days, making it an smart environmentally friendly alternative to plastic cup lids. What's more, It is verifed to meet ASTM D6400 standards for composability, so there is no need to worry about its performance and we can provide you with relevant certificates. Its dimension is suitable for the vast majority of cups in daily life (8- to 20-ounce), Therefore, sourcing our cup lids can be widely used for cups of various capacities, without worrying about whether it matches the cups on the market.