Babys' skin is very tender and delicate! You have to pay 100% precaution when bathing!! This card can protect baby hurting from cool or hot water.

The card is made of LCD thermometer material. It is waterproof, reusable, refinement, flexible, safe, innocuous to environment, scientific, practical!

Usage: Dip completely into bath water for 15 seconds!! The green color indicates the current temperature of the water. If nothing appears on the strip, it means the water is either too hot or too cold.