Yellow Green Color Change Artistic Straw

Material: PVC/PP/PETG
Dimension: 5mm/6mm/7mm
Color: Different color
Design :  Artistic straw with changing color feature
Outer Φ:  5mm/6mm/7mm 
LOGO:  Can be added

Detail Description:
The straw color will change from yellow to green while it put in a cold water
it is perfect for promotion and for parties;
Special feature of color changing
The color of the straw will be changed while it put in a cold water
BPA free , recyclable and reusable