With the exception of Alpha Upper Extremity Liners, all Alpha Liners are available in both cushion and locking styles. Some locking liners are offered with a choice of a standard umbrella or an accordion umbrella.
Cushion: Use with elevated vacuum systems or passive suction suspension.
Locking: Use with clutch locks and shuttle locks. The size of an accordion umbrella changes with the liner size while a standard umbrella does not.
WillowWood offers various devices for all types of suspension.