Leak-proof Silicone Seal kit for Stanley Tumblers

Description

• Circular leak-proof plug:
  Installed in the middle of the cover for sealing, with a opening design to ensure air entry during drinking water, making drinking water easier.
• Square anti overflow plug seal:
  Installed in the suction tube hole of the cover, not only forming a seal, but also fixing the suction tube.
• Silicone material:
  A set of 3 anti overflow plugs, which are food grade silicone and can be reused. They do not contain bisphenol A and can be cleaned by a dishwasher.