Note:&Nbsp;Please Make Sure That The Blow Dryer You Are Going To Match With Meets The Following Requirements The Kingkam Nozzle Of Blow Dryer Is Orbicular Round Shape And The Diameter Of The Nozzle Is Between 1.575-1.968 Inches (4-5Cm) The Dryer Cylinder Tapers Towards The End Of Nozzle.Why Choose Our Hair Diffuser? Hair Dryers Size: Professional Hair Dryer Diffuser Size Is Suitable For Nozzle Diameter:D-1.575Inch-1.968 Inch (4-5Cm), And There'Re No Extra Ring Wrapped Around The Nozzle. High Temperature Resistant:&Nbsp;Our Product'S Material Is Silicone, Which Is High Temperature Resistant, No Melt And Without Deformation For Long Term Use. And It Has A Cool Touch Surface. Smart Collapsible Design:&Nbsp;No Worries About Your Beautiful Hairstyle When Travel. It Easily Put In Your Handbag Or Makeup Bag. ( Foldable Size:&Nbsp;5.31Inch*1.97Inch). Make Your Hairstyle:&Nbsp;With This Diffuser Hair Dryer, It Can Help To Diffuse The Heat And Air From The Dryer Evenly, Which Will Protect The Hair From Damage Of Concentrated Heat.How To Use Our Hair Dryer Diffuser ? Wash And Conditioner Your Hair, Dry With Towel First Add Anti-Frizz Product Or Serum Attach The Diffuser To The Dryer Nozzle Place A Section Of Your Hair Into The Bowl Of Diffuser Move The Diffuser Gently Over The Scalp While Drying. Hold It Until Your Hair Roots And Tips Are Dry Pull Out After Cooling