Household medical breathing trainer

Plz note that balls color is random.

Material: PVC
Characteristics:
1. Use a safe and comfortable material, combined with an ergonomic design.
2. Flexural strength of the Pipeline, unaffected by patient posture, easy to clean, durable.
3. The lower filter screen can effectively prevent cross infection and keep the sphere clean and hygienic.
4.Bright color sphere, integrate into color psychology, inspire patient training.
Description:
The practical double-card connector design, tight connection is not easy to fall off.
The main body is thickened and reinforced, forming one, durable and anti-fall.