Sex position aid
From wipipedia.org
A sex position aid is a device that may be used to support the body during sexual intercourse.
An aid may be designed for a specific activity such as a spanking bench, fisting sling or doggy-style strap.
Reasons for using sex position aids vary from simple comfort, as they can support weight and make certain positions easier to maintain, to BDSM play; bondage equipment such as a stocks or pillory fit into this category. Sex position aids can allow people to achieve angles of penetration that are not otherwise feasible for them.
Sex position aids are of particular use to the disabled or generally those who are less supple.
