Comfy Earrings provide a flat back for comfort 24/7. Two pairs of earrings; one set enamel white ghosts and one pair clear bezel studs both in silver titanium. The exclusive screw-on Comfy flat back is just 6.0 mm wide and 2.0 mm thick for maximum comfort and balance. It eliminates pressure on your ears and covers the back of the post to protect your neck from painful pokes (even while sleeping)! Bezel studs: Gem Color: Crystal / Clear Gem Size: 6.0 mm Post: 1.0 mm x 6.0 mm (18 gauge) Metal: 316L Surgical Grade Stainless Steel Gem Type: Cubic Zirconia Ghost studs: Ghost Size: 9.0 mm x 6.0 mm Post: 1.0 mm x 6.0 mm (18 gauge) Metal: 316L Surgical Grade Stainless Steel with enamel