What kind of Sim card does the iPhone XR take?

I plan to get a Product Red iPhone XR 128GB for Christmas, I'm getting it unlocked and plan to use it with Straight Talk(I can't afford the big name providers like Verizon, T-Mobil, AT&T and Sprint), so what kind of Sim card does the iPhone XR take?

Nano-SIM Card

Nano or eSim.

NanoSIM

Sure can