Soft swap is a term used by individuals who are into the swinger lifestyle or partner swapping to refer to sexual activities in swinger play that do not include penetrative sex. Soft swap swingers have a range of different limits, although penetrative sex is the most common. For instance, some may only want to have sex in the same room as other swingers. Others may be open to a range of activities, including kissing, fondling, oral sex and analingus with other swingers, or they may limit their interactions to just a few. The opposite of soft swap is full swap.
Couples may prefer soft swapping when they are newer to the swing lifestyle because it imposes a limit on the play involved. However, setting penetrative sex as a limit also perpetuates the idea that penis-in-vagina sex is "real" sex, while other types of play are somehow less pleasurable, connective or serious.