Sibley currently leads the batting charts in County Championship Division 1 with 1324 runs across 21 innings at a stunning average of 69.68.
He has faced over 3000 deliveries in County Championship Division One which has caught the attention of national selector Ed Smith, who termed Sibley’s method to be ‘very clear’.
"It's been a good year for myself and to get that call is really pleasing," Sibley told Sky Sports.
"I came [to Edgbaston] on day five [of the first Ashes Test]. To feel the atmosphere and see the way cricket got so big over the summer during the World Cup and Ashes, makes you even more hungry to be part of it."
The Epsom born batsman says being slightly more open chested and having a wider base has helped him in scoring a lot more runs this season.
"Last year I was standing really narrow for a tall lad and was a bit side on, now I have opened up and got a bit wider on my feet.
"Also mentally - moving away and growing up as a person as well has made a big difference so a combination of the two.
"Batting for long periods of time is what I have done well this year but, to be fair, it's something I have done since a young age and hopefully I can continue to do it.”