Background: Studies showed, that 50% of people aged 80 and older fall once a year. Shoes play an important role in the walking security and mobility in old age. There is still a lack of evidence-based knowledge for shoe recommendations with regard to the walking security and mobility among older people. The aim of this work is to show the differences between open back shoes and closed shoes and their effects on the walking security and mobility of people aged 80 years and older. It helps to make recommendations which type of shoes should be worn at home.Method: 24 people, including 12 male and 12 female, aged between 81 - 95 years, who still live at home, took part with their personal closed shoes and with their open-back slippers on a „Timed Up and Go" (TUG) test. In addition, their Body Mass Index (BMI) according to WHO criteria and their mobility with an adapted Care Dependency Scale (PAS) were also measured.Results: 25% of men were classified with both types of shoes and 50% of men with their open-back slippers, as well as 33,4% of women with both types of shoes and 58,4% of women with their open-back slippers are according to TUG listed as fall-endangered. Among all participants 29% (n=7) with both types of shoes and 54% (n=13) with their open-back slippers were also at risk to fall. Three men and three women (25%), who were classified as overweight according to the BMI classification (BMI > 25 kg/m), were with their open-back slippers also prone to a fall. Two men and four women (25%), classified as partially dependent on care, with both types of footwear were also at risk to fall.Summary: Walking times were by more than half of all examined participants (n=13) with their open-back slippers prone to a fall. Therefore wearing fully closed shoes for people aged 80 years and older is recommended for home usage.