Seternaly Creative Thermal Sensor Case for iPhone 7/iPhone 8 Color Changing Black to Orange [4.7″]

Size Information(cm)
Size Notes: A-B cm (A is the size of laid flat, B is the size of after stretch). For example, Bust:(S) 86-92 cm, which means for Size S, the bust size laid flat of the item is 86 cm; the bust size after stretch is 92 cm!
New And Tagged.
This Clothing Size Information Is Just For Reference Only,And Allow 1-2cm Differences Due To Manual Measurement, Thanks.

Personalized design: The newest stylish design in 2018, perftctly fit with precise card holes of iPhone 7 Plus/iPhone 8 Plus.
Thermal color changing belongs to physical changes, not a chemical reaction, therefore there is no harm to the human body.
Dynamic and flexible,the borders can also be discolored by heat. Weights only 0.7oz,you can barely feel its weight.
The color will change when the temperature around over 28 degree centigrade and restore the original color after cooling.
ALL-ROUND protection,shock & oil proof,comfortable touch with great mechanical strength.