There is a shop Ibiza that sells Wayuu Taya bags or very similar ones, and since I've come back to the UK I've tried to find them, finally success. The colours are vibrant and ideal for summer or for a splash of colour against black clothing or skys in winter. The bags are produced as part of the Wayuu Taya Foundation.
The foundation is a non governmental, nonprofit organisation founded in 2002 to help improve the lives of Latin-American indigenous communities while maintaining and respecting their traditions, culture and beliefs.
In the UK you can get them from NET-A-PORTER. You can also buy direct from Wayuu Taya, which has more styles and ships within 1-2 weeks.