This report is the main part of the documentation project for the master thesis called Duro. The documentations consists of this report that covers the process of developing the product described in the product report with the technical drawing. Duro is a mobility aid developed for users living an active life style despite of their walking disability. The objective of the project were to challenge current wheelchair manufacturers in their way of designing electrical wheelchair. Duro is providing a new design enhancing the feeling of safety while driving outside.