TOOGOO(R) 12cm 4.7" Diameter Clear White Silicone Cup Cover Knob Airtight Cap Lid Product Name : Silicone Cup Cover;Material : Silicone Diameter : 12cm / 4.7";Knob Size : 1 x 1.5cm / 0.39" x 0.59" (H*W) Color : Clear White Net Weight : 20g Package Content : 1 x Silicone Cup Cover