Huf Puf kit is a ready to use inhaler extension kit, which includes baby mask and Zerostat VT spacer. The Huf Puf kit is especially designed to deliver medicine to children up to 4 years of age using an inhaler. It is an easy-to-use kit that makes it convenient for a child to obtain the full benefits of the medicine while breathing in and out normally. The shape of the mask provides a comfortable fit over a child's face for breathing, and transparent spacer allows you to keep a check on the dose released in the spacer. Direction for use:Remove the mouthpiece cap from the inhalerShake the inhaler wellInsert the inhaler into the Huf Puf kit Place the mask firmly over child's mouthRelease the dose from the inhaler, and hold it for 30 seconds while the child is inhaling the medicine through the maskPress the pump again for second dosage Use under medical supervision.