The link to the company is provided in the video description for anyone who TRULY is interested in supporting this cause. But to answer your questions, yes they are designed to last for 5 years or longer. The advantages are that ypu shouldn't have to buy a brand new pair of sandals every 6-12 months or more. This helps you save money, is great for the planet, and doesnt induldge in fast fashion trends at all. These fit my 8 year old son's and my feet (womens US 9.5) comfortably. This also helps support a company who os bringing shoes to thousands of children world wide. They cost $15. But you arr required to purchase an additional 2 pairs to donate in order to own a pair. Because that is the main point of this product. To provide shes to kids in other countries who don't have access to them. This increases their risk of contracting diseases through the souls of their feet. In many cases this also prevents them from attending school as shoes are a requirement. I think being fashionable should be further down the list of peooles priorities.