When I first saw this, I thought it would be so convenient to have a shoe sizer at home!  Then I realized that it's also a keepsake!  You simply take a Sharpie and mark off the tallest part of the foot and then write the date or age of your kid.  That's when I knew I HAD to buy this product.  Yes, it's a little pricey for a simple shoe sizer, but since it's a memento that you will be keeping, I think the price is well worth it.  I am buying a pink one for my daughter as well.