set of 2 dryer balls are chemical and allergy free. save energy and money with these easy to use non-toxic dryer balls. simply add them to your drying cycle to naturally soften clothes and reduce drying time. whitmor is a 4th generation family-owned and operated business. since 1946 whitmor has been dedicated to bringing organization home by creating products that simplify everyday life. ensuring that those products are built with integrity value and innovation is our commitment to you. and our promise is that we will always be here for you should you ever need us as we stand behind our product 100%. whitmor customer service is available in english and spanish monday through friday from 8am - 4:30pm cst. call us and we will gladly assist you in your language. call us and we will gladly assist you in your language. whitmor customer service department 1-888-944-8667 or [email protected]. SKU:ADIB000E202KM