For iPhone 7/8 case??Compatible with iPhone 7/ iPhone 8 4.7 inch. For iPhone 7 8 cases:It has a long and short lanyard and a sturdy buckle. Short lanyard can be used as a wrist strap to prevent the phone from falling. The long one can be connected to the phone case and hung around the neck to free hands. For iPhone 8 case lanyard:The back of the phone case has a freely stretchable pattern band, which is fixed by a solid metal nail. There is also a detachable ring metal buckle. For iPhone 7 slim case:Precise charging cutout fits the volume buttons, side button, and curves of your device without adding bulk. For iPhone 7 8 4.7 inch: Protect iPhone 7&8 screen and camera from scratching and dropping and precise cutouts for easy access.