The XV15 Stealthsuit is designed to be worn by a single member of the Fire Caste, and is the smallest of all the various Battlesuit variants of the Tau, as a Tau in an XV15 Stealthsuit is hardly larger than a Fire Warrior in standard Tau Combat Armour; even though it offers far greater protection. However, this perfectly suits the XV15's role as the preferred Battlesuit of Tau infiltrators and saboteurs. XV15 Stealthsuits are significantly smaller than the XV8 Crisis Battlesuits, and, because of this, carry less weaponry. What Stealthsuits lack in firepower, however, they more than make up for with the ability to move almost unseen by the enemy until the very last instant. XV15 Stealthsuits are currently being phased out of mainstream use and being replaced by the XV25 Stealthsuit. This ha