Features: This thermos stopper is made of food grade silicone.anti-aging. non-toxic and tasteless. Unique spiral silicone plug insulation effect is extended by 50%. Safe and hygienic. Thermos Plug only.other accessories demo in the picture are not included! Specifications: Material: Food Grade Silicone Color: Random delivery (If you buy more than one.the color you received may be the same or different colors) Size: app.4.5cmx4cm/1.77inx1.57in Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors. the picture may not reflect the actual color of the item. Thank you! Package includes: 1xThermos Plug