Breathing Sensitive Valve The glove is about 27cm

The glove is about 27cm long and 12cm wide

Head circumference within 64CM

As a factory-sourced store

Air pump weight: 1

and the length of the mouth zipper is 8CM

Breathing Sensitive Valve The glove is about 27cmProduct Description The air valve can control the amount of air entering by the strength of breathing. Gentle breathing will allow more air to enter, while strong breathing will allow less air to enter. This product can be used with any gas mask with RD40 thread. The air valve is compatible with all gas masks in the store. Product Specifications Material: PLA filaments (100% biodegradable) Color: Black Interface: Compatible with all RD40 threads