Oxygen mask-simple:

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.There are small holes on both sides of the mask to remove carbon dioxide in time.

5.Medium concentration, approx 50%.

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

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

Specification:XS，S，M，L，L+，XL。