Modified Wingsuit

Modified Wingsuit (高度羽揃い, Kōdo Hanesoroi) is an advanced wingsuit created and formerly used by Nick; who based it off of his gradfather's original design.

Overview
Made of cotton and vespel weaved into an intricate micro-webbed format and layered with a simple coating of silastic-based paint (originally gray and black; later changed to black and red), the Wingsuit transforms Niklaus's human form into a full-body wing, which means the suit features as much horizontal surface as possible to become an effective airfoil. The webbed design helps to this cause specially the reinforced surface between the legs and under the arms. The force of the opposing air inflates these membranes by pushing air through inlets in the suit, helping to keep the airfoil semi-rigid through flight. This means that Nick doesn't have to maintain the shape of the wings through sheer physical force alone, but also doesn't suffer limited mobility due to a rigid wing structure. The suit straps securely to the his body, without obstructing the pilot chute or the emergency handles on the chest that deploy the reserve chute.

Due to it's components it's highly resistant to friction, heat and corrosion; making it unique among Wingsuits. Some neoprene padding was added to the crotch and chest area of the suit to offer minimal protection against impacts.

Trivia

 * Originally, the Wingsuit only protected his chest and groin area from impacts thanks to some padding.