The cockalier isn't a purebred dog, but a cross between the cocker spaniel and the Cavalier King Charles spaniel. Unlike some so-called "designer" dog crosses, these two types of spaniels share a lot of similarities. Neither is a non-shedding breed, so expect a cockalier to lose hair seasonally. If you're in the market for a nonshedding dog, look for a poodle or poodle mix. Consider the cocker spaniel/poodle cross, or cockapoo.
Both the cocker and the Cavalier King Charles spaniel breed standards call for silky, moderate length coats. Both breeds permit a slightly wavy hair. No matter which parent your cockalier takes after, his coat shouldn't require more than weekly brushing. While these spaniels' fine coats do shed, neither does so excessively.