The idea that inspired SizeTracker came about in 2006, when Stormy Sweitzer decided to start a subscription baby gift service. The subscription service never came to be. But, what remained was a way to find the best size of clothing for a child, to predict when the size will be outgrown, and to determine the best size to buy now so that clothing will fit well for a future holiday, special event or even the start of the next summer season. Co-founder William Swanepoel developed these ideas into easy-to-use tools that can be used for online shopping.

Today, SizeTracker helps parents and giftgivers shop for children's clothing with greater confidence that their purchases will fit a child how and when they should. By offering brand-specific size calculation tools, growth and development resources, product reviews, and product recommendations that meet shoppers' budgets and shopping goals, SizeTracker makes shopping better than ever before.