From the website:
The leaders of the Stormhosts, exceptionally gifted warriors who ride into battle in blazing fields of azure light, the Lord-Celestants are respected for their tenacity and battle skills even amongst the immortals. Gavriel Sureheart is a valiant champion of Sigmar’s Stormhosts, casting aside the enemies of Order with an imperious sweep of his starbound blade.
This multi-part plastic kit contains the components necessary to assemble Gavriel Sureheart, a Stormcast Eternals Lord-Celestant. He’s clad in the impressively bulky armour that his brothers wear, but Sureheart eschews the standard helm – he comes with a bare head, showing clearly his furious expression and long, flowing hair. He holds aloft a starbound blade as long as he is tall, inscribed with powerful runes, and a Sigmarite thundershield – this is different to the shield held by most Lords-Celestant, being similar to the round variant held by Dracothian Guard. Each and every surface of the model is littered with the iconography of Sigmar, from the sculpted shoulder pads to the carved greaves.