Material: Plastic Size: 9*9*2.5cm / 3.51"*3.51"*0.98" Color: Green Package Includes: 4 Mason Lids Perfect Fit: Fits securely to standard wide-mouth mason jars, compatible with wide-mouth mason jars, perfect for sprouting seeds such as beans, broccoli, alfalfa and other salad greens. Including well-known brands such as Ball, Kerr and Bernardin, ensuring effective germination without leakage. Efficient Drainage: The mesh strainer lid with integrated drainage bracket ensures smooth water while ensuring that the seeds are firmly fixed. Easy to Use: Simple one-piece structure, no complicated assembly required - just put it on the mason jar and start sprouting. Optimal Seed Germination Effect: With a specially designed germination lid that promotes drainage and air circulation, the 45-degree tilt angle enhances air circulation in the jar, ensuring that the seeds, seedlings and microgreens (such as alfalfa, broccoli and bean sprouts) in your home grow healthy and strong. Perfect Size: The opening diameter is 9cm, can fit into standard wide-mouthed Mason jars, convenient for germination at home