Venturi mask-adjustable：

1.Made of clear,medical grade PVC.

2.With adjustable nose clip, elastic strap and latex free.

3.The mask material is soft and transparent, more comfortable and safer.

4.Single diluter for one concentration, seven diluters can be selected:

   24%(4L/min)-blue,28%(4L/min)-yellow,31%(6L/min)-white,

   35%(8L/min)-green,40%(8L/min)-pink,50%(10L/min)-orange.

5.Longer and thicker anti-crush tube fits tightly and is less likely to leak.

6.Length: with 2 m tubing, different length can be customized.

Specification:XS，S，M，L，L+，XL。