Using Single Driver Iem Technology Flight Custom Provides Best Sound Whilst Fitting Flush Inside Ear, Allowing Wearer to Lie Their Head Flat Whilst Sleeping. Makes Them Discreet, Lightweight & Small, Convenient for Travelling Without Losing Any Performance. Due to Perfect Fit Flight Custom Are Very Comfortable. Sound is Detailed with Superb Dynamics & Balanced Expressive Feel. Robust Design in Soft Medical Grade Silicon is Fitted with Black Teflon Y-cable & Removable Filters, So Custom Flight Are Easy to Clean & Maintain. Use Our Variety of Colours to Quickly Separate Left From Right. Available in Green, Lemon Drop Glitter, Orange Sorbet Glitter, Sour Apple Glitter, Sugar Plum Glitter, Black Metallic, Pastel Pink Glitter, Baby Blue Glitter, Blue Metallic, Turqouise, Orange, Pink, Red Metallic, Clear Transparent, Clear Transparent Glitter, White. Made in Britain. Minimum Quantity: 10.