Spill-proof cups are the best thing ever—until you insert the straw and liquid erupts like a 5th Grade science fair project. Enter these ingenious straws: they feature a spillproof valve that eliminates the chance of unwanted volcanic activity. Includes six straws and a cleaning brush and can be cut to fit almost any cup. Ka-boom!

Spillproof valve
• Includes 6 straws and cleaning brush
• Straws can be cut to fit most cups
• Ridge keeps straw in cup
• 100% silicone
• Made without BPA and PVC
• Dishwasher safe