Oral sex is more fun when both people are comfortable, and the Airborne Oral Sex Position is one of those sex positions that looks extremely athletic and adventurous - but it's much, much easier than it looks. Not only that, but the sex swing allows for a multitude of modifications to allow both partners to find positions that work amazingly for their own bodies and limitations.
The giver can take any position they desire to provide the oral sex. Kneeling on the floor can work in a pinch, but most people will find that their knees will not want to be kinked for extended periods of time. Luckily, this position allows the giver to pull up a chair or stool to help the action continue while being friendly to the giver's body.
The sex swing you choose to use will make a large difference in the receiver's enjoyment of the airborne oral sex position. A thigh-straps-only sex swing (like the one shown in the illustration) will require the receiver to have good core strength and partially support some of their body weight through their arms.
Since one of the perks of this position is making oral sex comfortable enough to be sustained for long periods of time, you may want to find a more comfortable piece of sex furniture for the receiver. Using a sex swing with a full seat will support more of the receiver's weight and will reduce the physical strain required to stay in the position. Going with a full sex sling like the XR Brands Extreme Sling - or a simple wide seat like the Sportsheets Door Jam Sex Sling Special Edition - allows the recipient to feel fully supported and extends the longevity of this sex position.