The Aggressive is available only in Grey and is the Newest Version of the AL13.

The Henson AL13 Aggressive puts an end to shaving irritation and cuts, while also making your skin feel comfortable and smooth. They created this razor to give you a whole new shaving experience unlike any other. Your skin will feel amazing after using this razor. 

The only difference between the Henson AL13 Aggressive and the Henson AL13 Medium is the blade gap and blade exposure. These measurements control the "aggressiveness" of the shave. 

For finer hair and shaving areas other than the face, a milder razor is generally desired. Go for  the AL13 Mild. For coarser hair, the aggression of the AL13 Medium razor may be more suitable. For even heavier beard growth go for the new Aggressive Version of this razor.