In the UK and other European countries, Sure is the name of a brand of antiperspirant deodorant for men and women produced by Unilever, marketed with the tagline “It Won’t Let You Down”.

Sure (UK and Ireland) is known by various other names globally – Rexona (Continental Europe, Argentina, Mexico, South America, Asia, Pacific) and Degree (United States & Canada). All three versions carry the tick logo.

In the United States, Sure is a different brand owned by Helen of Troy Limited, which acquired the brand from Innovative Brands in March 2010. Innovative Brands, LLC, a portfolio company of Najafi Companies, had acquired the brand from Procter & Gamble in September 2006.

Info gleaned from Wikipedia