The set consists of a Donut 15 wing, a DIR harness adjustable on a 3 mm steel plate together with fastening straps for a single cylinder. Double-wing wing with wyp. 15kg (35lb / 147N) intended for vehicles bottle. The oval shape facilitates handling in any position, allowing free air flow. Extremely durable and soft outer shell is made of special, non-stick Hollow Duty 1000D Nylon, resistant to hooks and tears, replace YKK zipper. The inner bag is made of Nylon 840 with increased resistance to aging and cracking. The bags are sold with a high-quality 40 cm long inflatable tube and an 55 cm Proflex IFLP hose with a braided cover. Inflator is led out on the left side of the wing so that it does not interfere with the cylinder, the inflator elbow is reinforced with a loop from a wide belt. The bags also have one low-profile relief valve with a string with a small, clearly visible, red ball and special openings to facilitate emptying the space between the bags. Connect the set with a choice of fixed or movable D-rings.