Reiner complies without hesitation, his other hand lifting, forming a wall between Jean and the Spring Segment stretched out before them. Reiner is careful not to cup his hand over Jean; he's trying to provide security, not claustrophobia. And even if he has no intention of hurting Jean, Reiner knows all too well how frightening a Titan's hands can be.

"You can latch onto my Armor if you want, too," he offers. "The hooks don't hurt me. Not much does. Have you ever felt someone poke you when you're bundled up in a thick coat or blanket? It's a little like that."

He's intentionally rambling a bit, trying to get Jean's mind off the height. In retrospect, Reiner should've offered to sit down—but he doesn't want to do that now, concerned that the extra movement (and the sensation of dropping) would do more harm than good.