Do arena chests scale with level?

Gameplay
1

So, if I have a chest in my inventory when I’m lv50, and don’t open it until I’m lv99, will the item I get be lv99?

2

Yes. If you’re level 99, it should give you maxed out item. I think it could be floor dependant also.

At level 50, you can equip level 100 gear though but I haven’t tested chests on low level character to check. Maybe I will check.