1.Material: Soft : PVC 2.Non-sharp edge design for single use 3.Made in latex-free medical grade material 4.Color coding for easier size identification 5.Full range of 9 sizes available : 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 120mm. 6.See through tubing and well softness for Soft Guedel