Features: World Centric Compostable Clear Sip Lids For 9Q-24 Oz Clear Cold Cups Are Made From Pla, A Bio-Based Plastic Made From Plant Sugars. The Strawless Design Reduces Waste And Provide Convenient Sipping On The Go. These Eco-Friendly Sip Lids Are Lightweight And Freezer Safe. Not Microwavable. Pla Products Should Be Stored In A Cool Place Below 110 F And Out Of Direct Sunlight. They Are Certified Compostable In A Commercial Facility, Which May Not Exist In Your Area. By Using World Centric Compostable Products, You Are Reducing Waste And Taking Action To Make A Difference.