DyeFlex™ White Satin Plastic Insert for the iPhone6+/6s+ Cases, (sold separately, 305631-K/W, 305634-K/W/CL, 305635-K/W/CL). 5.87" x 2.7" x .020". This insert will not interfere with NFC technology on the smartphone and will help provide maximum signal strength. DyeFlex shrinks when pressed.