STACKABLE: no center knob allows for better fridge organization easy to store. Fits to different size cookers. EASY TO CLEAN: This lid features a steam-release vent and silicone handle that is easy to grip. non-stick waterďźnot sticky oil, easy to clean. Fits to different size cooker. HEAT RESISTANT: working Temperature Range -40 °F to 482 °F, high-temperature resistance for healthy cooking. We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!