The technological intervention in our day-to-day life, impacted our social, physical, psychological and spiritual domains. The shoes are not untouchable from the latest innovations. The footwear is an essential wear in present time. The technology is completely changed the footwear industry and the customer flavour. Now the customer is looking for customized, smart footwear, which is environment friendly. The present footwear is using polymer soles (i.e. PVC, PU, EVA or Rubber), chemical based adhesives and animal leather upper material, which are not eco-friendly. A lot of research is going on to make sustainable and eco-friendly shoes with different biodegradable materials. The footwear industry is embracing both smartness and sustainability, blending technological innovation with eco-conscious practices. The smart footwear uses many types of sensors/IoTs to include different features of smartness. This paper discusses some innovations in footwear technology, important issues, challenges and their remedies related to design and development of smart sustainable footwear.