This is a lunch box lid valves sealing plug, made of silicone material. This silicone plugs is suitable for the most brand's lunch box lid, thus can be applied in to square or round lid easily. This sealing plug make for your lunch box lids, helping to keep the foods temperature. Features -Color:White -Material:Silicone -Size:1.50X1.50X1.00cm/0.59X0.59X0.39in -Note: Suitable hole 0.5-0.6 cm - Select sturdy silicone materials, this lunch box lids sealing plug is healthy and safe. - Silicone material makes this plug is more resistant to high temperature, more . - Good sealing effect, it can keep the lunch box inner temperature when you take food, practical. - Easy to install and remove, this this sealing plug is also easy to clean and clean after washing - Remove the plug can help your to release the inner pressure of the lunch box, can help you can open the lunch box lid with ease. Package list: 4 x Lunch Box Sealing Stopper