Keleus is a Responsive Tumblr Business Theme. This theme can be used for a variety of businesses, such as: Startup Company, Creative Agency, and also can be used for Personal Blogging. This theme was made with a lot of features, one of the best features in this theme is the easy customization on each section. Another interesting features are the post grid customization (full width and boxed) mode, different top navigation styles, right sidebar with extra widgets, and also there are many features that you can explore in the theme options.
Demo: https://themeforest.net/item/keleus-responsive-tumblr-business-theme/9457762