The pods have been designed to fit into the base unit in only one direction, so don’t try to force them into place, they have a magnet system so should slide and lock into position really easily. The pods have also been designed with a silicon membrane across the airflow to reduce the chance of leaking e-liquid into the device or on your hands. They are also utilizing the ceramic coil as opposed to just stainless steel coils and cotton that we see on other pods. Many believe the flavor is a lot richer with ceramic coils.
Vladdin are releasing 4 initial flavours all available in 2 strengths; 18mg (1.8%) or 50mg (5%). The flavors include the Northern Tobacco, vanilla custard and tobacco which they call VCT, ice tobacco which is a Virginia tobacco flavor, and lastly mint tobacco.
Unfortunately, they are not designed to be refilled, although this can be achieved by removing the base of the pod, along with the cotton and coil, you have to be careful not to break the plastic.