A parachute is a small collar, usually made from leather, which fastens around the scrotum, with three or four short chains hanging beneath, from which weights can be hung. Conical in shape, the source of its name (its resemblance to its larger namesake) is obvious.
Used as part of cock and ball torture within a BDSM relationship, the parachute provides a constant drag and squeezing effect on the man's testicles. Considerable weights of 3 - 5kg can be suspended, especially during bondage. Smaller weights can be used when the man is free to move, when the swinging effect of the weight can restrict sudden movements, as well as providing a visual stimulus for the dominant partner.