2 pairs of 5mm and 6mm flatback earrings featuring screw backs for earrings,keeping them in place so you never lose them,comfortable to sleep in so you Don't have to worry about taking them our before bed 【High Quality Material】These earrings are made of high quality titanium stainless steel, suitable for any sensitive skin. which is completely hypoallergenic to prevent irritation, redness and always stays super shiny. Inlaid with 5A+ cubic zirconia,excellent cut, brilliant fire and high clarity. 【Flatback Stud Earrings】Flatback design for protect skin from painful pokes, can be wear in sleep or sport; Classic barbell design with shiny cubic zirconia well inlaid, simple and delicate. Excellent internal screw thread, firmly screw on and flexibly screw off.