Thor's Gauntlets

 are enchanted gauntlets formerly owned by the Norse God of Thunder, Thor.

They are key to the plot of Tomb Raider: Underworld.

Tomb Raider: Underworld
Whilst seeking Avalon, Lara inadvertently discovered the entrance to Niflheim in the Mediterranean sea, exploring the area, she discovers the first gauntlet, which she curiously put on Before getting a chance to find out what connection Norse myth had to Avalon, Lara is ambushed by Mercenaries, who knock her out, steal the gauntlet and seal her inside using explosives.

More to be added...

Power
The gauntlet's increase the wearer's strength, allowing them to lift several times their own weight with ease, although individually their power is limited and requires charging.

Both gauntlets are needed along with Thor's Belt in order to lift Thor's legendary Hammer, Mjölnir.