Suitable for Hair Dryers 1.54-1.69"It is designed to fit hair dryers (nozzle 1.54-1.69"/3.9-4.3 cm), it is not recommended to use a hair dryer with an AC fan motor, DC motor or high setting above 2000 watts with a diffuser . Please use the diffuser on the low heat/low speed setting first.Smart Folding DesignMade of sturdy silicone, this hair diffuser is able to fold and fold for travel and storage needs, slipping easily into the corner of your bag or padded suitcase, making this diffuser unique .Boost Volume and Height of HairThis hair diffuser is designed to give your hair vitality and optimal health.HIGH TEMPERATURE RESISTANTThis heat resistant diffuser has a cool touch silicone surface that ensures hair can be styled in temperatures up to 450F (230C).Removable and easy to cleanRemovable filter is easy to remove and clean. With a heart-warming design, you can soak some essential oils with a sponge or cotton ball for better results.The hair diffuser will give your hair volume, lift and extra boost and can be used on any type of hair from straight and soft to curly and wavy.This collapsible silicone diffuser makes it easier to add spring to your strands, promoting natural texture and eliminating frizz.A hair diffuser attached to the end of the blow dryer will eventually dry your curls with indirect heat to keep them healthy.