Which suit protects Samus from extreme heat?

The Varia Suit protects Samus from extreme heat. It is an upgraded version of her Power Suit that reduces damage from high-temperature environments, allowing her to explore volcanic areas and other hazardous locations.

The suit is especially important in games containing magma-filled regions. In the original Metroid, it helps Samus survive the hot areas of Zebes; in Metroid Prime, it allows her to enter the Magmoor Caverns, a network of lava-filled tunnels beneath Tallon IV. Its orange-and-red appearance has become one of Samus’s most recognizable designs.

The Varia Suit is often confused with the Gravity Suit, but their functions differ. The Gravity Suit improves movement and protection underwater and in other liquid environments, while the Varia Suit’s defining purpose is heat resistance. The Phazon Suit is a later upgrade from Metroid Prime that protects Samus from Phazon radiation, not ordinary extreme heat.