French straws or “paillettes” (Cassou, 1964) were originally made of polyvinyl chloride (PVC) and commercialized by IMV. 
We sell sealed sterile packs of 100 straws.
If you require a certain colour please add a note to your order, we stock:
Blue
Green
Yellow
Black
All of our 0.3ml straws are now made of polyethylene terephthalate glycol (PETG). 
The small radius of straws allows for excellent correspondence between the desired cooling curve and the actual thermal profile achieved for the specimens being frozen.