filter search

Hi, i need a plugin which will combine allow for drop menues for a friends site, it requires the option to sort by catagorie + sub catagory + have check boxes. The requirement is for a riding school where children can read about the various equipment before buying it. eg – a catagory for saddles, choose size ny drop menu, which then has a choice of height, plus length of strap selection and then possibly check boxes for the color where several can be selected. I have tried taxomaly and catagory settings with tags but i was looking for something simular to the setup below the menu here: https://www.woothemes.com/product-category/woocommerce-extensions/
i have checked with the firm here but this is not an extension they say. Any ideas on how to achieve this keeping in mind my friend wishes to configure and update it herself. She does not want a shop! But does want the children to able to search multiple catagories or parts of them, it needs to be kids friendly though!