Gauge
The thinner the gauge, the more power and spin the string produces. However, your string stretches more easily and is less durable. On the other hand, a thicker string provides more control and durability.
Structure
Its multifilament structure makes impacts more comfortable.
Parabola trajectory
Multifilament strings are made from hundreds or thousands of filaments that are woven together and surrounded by a protective layer (guipage process). With their excellent comfort during play, these strings are more elastic and therefore naturally more powerful, but they are also more fragile and break easily.