The Stryker Prime Series Stretcher is a high-quality stretcher that is designed to reduce physical strain on clinicians while enhancing patient care and comfort. The Lift Assist Backrest uses a drop-seat design which uses the patient's weight to help raise the head of the bed while cradling the patient to help reduce boosting. Models 1115/1125 - Big Wheel Advanced Mobility allows caregivers to push and steer the stretcher easier when compared to a manual fifth wheel stretcher Max weight 500 and 700 lbs. options available BackSmart Lift Assist technology uses the patient’s weight to raise the head of the stretcher while the drop seat design helps reduce boosting. Mattress Sold Separately Stryker Prime 1105/ 1115 Product Sheet Stryker Prime 1125 Zoom Product Sheet PRIME STRETCHER BIG WHEEL OPERATIONS MANUAL