Is the flat icon free?

Excuse me, I've come across this flat icon design and I'm quite intrigued. Could you please clarify if this particular flat icon is indeed free to use? I'm particularly interested in its licensing terms as I intend to utilize it in my project. Would there be any restrictions or limitations I should be aware of? Additionally, if it's not free, could you guide me towards obtaining a valid license or perhaps recommend similar free alternatives that could fit my needs? Thank you for your time and assistance in this matter.