The tube is made from non-toxic Silicone material.  No poison and harmless.  Suitable for adult, children and infant use.  

Reuse:  at least 15 times

Size: 1.0, 1 1/2, 2.0, 2 1/2, 3.0, 4.0, 5.0

Sterilization: EO

Packing:  1pc/blister bag, 5pcs/paper box.