H1B Visa validity

Hello Experts

I had H1b (By Lottery ) approved in Aug 2010 and never traveled ,6 years cap was supposed to expire in Aug 2016 but I had applied for Visa exempt and it got approved (Extended )for 1 year starting from Dec 2016 to Dec 2017.

Now at present my visa is active and valid and I have to go to USA before Dec 2017.

Now my question is …

If this time also if I do not travel to USA before Dec 2017, would I be eligible to extend for 1 more time or not?

Yes, you can. You should not have any issues.