- Safe and Reliable: Crafted from high-quality bamboo with durable silicone rings, these bamboo lids for glass cups are designed for long-term use. They are sturdy, easy to clean, and resistant to deformation or breakage. - Abundant Quantity: Each package contains 30 bamboo jar lids, providing ample supply for daily use and replacement. Enjoy a seamless experience in your kitchen and storage needs. (Note: Jars are not included.) - Excellent Leakproof Design: Each lid features a detachable silicone ring and a silicone closure at the top to ensure a secure seal. This design keeps contents fresh and preserves their flavor, making them ideal for beverages and food storage. - Standard Size Compatibility: These wooden jar lids measure approximately 70 mm (2.76 inches) in diameter, fitting regular mouth mason jars and most glass jars and cans. The eccentric hole, measuring about 15 mm (0.59 inches) in diameter, accommodates various straws, whether straight or curved, made from different materials. Use Scenarios: 1. Perfect for sealing beverages in mason jars when packing lunches or enjoying drinks on the go. 2. Ideal for storing homemade sauces, jams, or snacks, ensuring freshness during storage. 3. Great for organizing pantry items by using these lids on glass jars, which enhances both functionality and aesthetics.