This is a posable action figure.
From the Good Smile Company website:
Phat! Company have teamed up with the garage kit dealer 'RyunRyunTei' Toona Kanshi to codevelop a new generation of action figures known as the Parfom series, and the latest character to join the series is none other than Saber from "Fate/stay night [Unlimited Blade Works]"!
She comes with three face plates including a straight face, a shouting expression as well as a gentle smiling expression. Her sword Excalibur as well as its scabbard Avalon are both included in Parfom size and the skirt features opening and closing articulation which allows you to easily pose her in dynamic action scenes! In addition, special translucent effect parts for Excalibur are included to recreate both 'Invisible Air' and 'Strike Air' with the figure!