The VARILITE Evolution is the cushion of choice for wheelchair users with a high risk of tissue breakdown and symmetric positioning needs. Therapists recommend the Evolution for individuals with motor and neurological dysfunction due to spinal-cord injury, stroke, multiple sclerosis, cerebral palsy, and traumatic brain injury. Therapists value the Evolution’s outstanding pressure distribution and postural support. Users and caregivers value its low weight, comfort, and ease of use. No pumps or accessories. No kneading or manipulation. Superior pressure distribution, positioning stability, comfort and simplicity have made the Evolution our most popular wheelchair cushion. By adding VARILITE’s innovative PSV (Pressure Setting Valve) we’ve made the Evolution PSV even better, taking the guesswork out of cushion adjustment. VARILITE Air-Foam Floatation makes the Evolution ultralight, without compromising pressure distribution and support. Functional areas of the cushion are created by three types of foam: soft foam for the decubitus-sensitive area of the ITs; medium foam for the thigh trough, pelvic bucketing and pre-ischial bar; and firm foam for the perimeter and the medial thigh separator.