[FOOD GRADE MATERIAL] - Our Wooden Jar lids are made with natural wood and Food Grade Silicone,You 't have to worry about the health of your family. DOUBLE-LAYER LACQUER & STRONG PROTECTION - wood mason jar lid in the production of double lacquer baking, gives wood greater protection, while making bamboo lid surface more smooth, easier to clean. Dishwasher safe, no longer limited to hand washing. [SEALING SAFE] - These wooden lids form an airtight silicone seal with Ball/Kerr jars, making them perfect for dry foods and pantry storage,So as to better the freshness and health of the ingredients in the food storage containers and make the food very dry. [PACKING INCLUDED] - that fit all standard All Sealed mason jars; -free; not safe for preserving; hand-wash only and clean well before use. [SPACE SAVING] - Easy stacking with most Ball/Kerr jars, easily fit into your refrigerator, freezer which enables you to get the kitchen organized and frees up space in the pantry. color:Wood brown Material:Wood size:Outer diameter: 89mm Package Contents: 6 x Wooden Storage Lids Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.