Black and white sketch of a compact backpack stretcher and a telescopic ladder, showing both rolled and unrolled configurations with wheels.

Black and white sketch of a compact backpack stretcher prototype for heavy equipment in forests, featuring a telescopic ladder as the base frame that extends for rigidity, a rollable flexible material bed like a yoga mat that unrolls between 30cm diameter wheels on an axle, show both compacted rolled-up view and fully deployed view with backpack straps attached. See more