To provide a device having a surface enabling a user to hold, and reducing the slip of hands.

A handle surface 32 is formed to substantially alleviate a hand slip possibly appearing during the use of an appliance. A hand-held device having the surface 32 is preferably a knife. Furthermore, the handle surface 32 has flat upper edges 30 formed at a skew angle for making a plurality of upper edges 34 designed to maximally prevent the hand slip.