Transcend Heat-Resistant Phone Case 7.5x3.5 Inches 176°F Black

Heat-resistant phone case for sauna use

This heat-resistant phone case is built for sauna and hot-yoga environments where temperatures reach 176°F. Multi-layer thermal insulation slows heat transfer to extend safe usage time, though it does not make the phone heat-proof. The case fits devices up to 7.5 x 3.5 inches and is compatible with iPhone 11 through 16 series and Galaxy models. It suits users who want basic phone access during short to moderate high-heat sessions.

Capacity and thermal headroom

The internal cavity measures 19cm x 9cm and accommodates phones with or without slim cases. Thermal protection is rated for environments up to 176°F, but internal temperature can still rise during extended exposure. Newer handsets typically handle heat more efficiently than older models, so safe session length varies by device. The design targets short to moderate sauna or hot-yoga sessions rather than continuous extreme-heat immersion.

Sealed construction and magnetic mount

A fully sealed, waterproof shell blocks moisture, humidity and sweat during wet sessions. A crystal-clear window maintains touch responsiveness for music, wellness apps and messages without opening the case. A strong circular magnet secures the case to sauna walls, gym lockers or other metal surfaces for hands-free viewing at convenient angles. The slim, portable profile allows easy storage when not in use.