Padded straps. From the manufacturer : "The Pleasure Swing holds up to 200 pounds with the spring - or 400 without - which means both of you can easily swing together. The strong nylon straps are adjustable and extra wide for maximum strength and flexibility - and the heavy duty spring makes sex extra bouncy fun! The ultimate sexual apparatus - the Pleasure Swing is nearly 100 % preassembled and ready for action. Soft padded - heavy duty straps for feet - ankles - calves or thighs ensure maximum comfort. A special eyelet bolt enables swing to rotate. For the serious sexual adventurer." Sold as a novelty only.