Acumen - The Highly Extensible Magento Theme
Acumen is a powerfully flexible, grid-based Magento theme. It was designed specifically for easy customization and to fit a wide range of stores. Its minimal layout puts maximum attention on products, while keeping a clean and modern aesthetic throughout. You’ll love it!

Magento Core Features
Category (Grid & List View) + Faceted Navigation
Product Page (with Related Products + Cross Sell + Reviews)
Product types: Simple, Configurable, Grouped, Bundled
Search Autocomplete
Cart (with Up Sell) + Onepage Checkout + Multiple Address Checkout
Customer Dashboard (with Order History + Reviews + Tags + more)
CMS Pages (100% layout freedom with grids)
Send to Friend + Wishlist + Gift Messages