Babies and kids' skin is very tender.They are very easy to get burnt.We can't easily judge from our adults' eyes.How should we settle this problem? This small card will help mothers free of trouble and keep your babies away from heat and cold when taking baths. Deep it into bathtub for 10 seconds before taking baths for kids,and the current temperature will be indicated by a green integer.Read the temperature there and find out if the temperature is ideal for kids.If not,just try some ways to adjust the temperature till it is ok. It is cheap,easy to use and reserve,can be used again and again.It will be an excellent tool for mothers. To companies,as it is OEM products,you can have your own design freely,and print whatever as you like.Also it is a very good gift for companies which selling baby products.