Even without additional power it's possible to gain a small amount of altitude with a wingsuit[0]. Modern suits can be very powerful with proper technique. [0]

Even without additional power it's possible to gain a small amount of altitude with a wingsuit[0]. Modern suits can be very powerful with proper technique. [0] https://squirrel.ws/learn/wingsuit-deployments https://squirrel.ws/learn/wingsuit-deployments