Sitting at the intersection of performance and casual, the Cruzer is a versatile minimalist tool that will challenge your imagination. The Cruzer can be worn fully laced up for maximum support, or slipped on for quick/casual missions. You can scramble up slabs or clip them on your harness when climbing a multi-pitch route to cruise down sketchy descents in comfort. At the end of the day, kick back around the campfire in slipper mode or throw on a pair of jeans and head out for a night on the town.
Climbing Magazine 2012 Gear Guide - Cruzer Review
As a general rule, men should go one size up from their regular shoe size for the best fit.