A combination of Sip and Puff Head Array helps eliminate the issues sometimes associated with pure Sip and Puff drive control. By not having to differentiate between a hard and soft sip or puff for four directions, the user can do any level of sip or puff for forward and reverse and use a slight roll of the head for left and right, allowing much better control and veering. We also offer our Opti-Stop fiber optic switch attached to the straw as a standard feature as an essential safety component of a Sip and Puff system. The chair will automatically stop if the switch and straw come away from the driver’s mouth.