A sex doll (also love doll or blow up doll) is a type of sex toy in the size and shape of a sexual partner for aid in masturbation. The sex doll may consist of an entire body with face, or just a head, pelvis or other partial body, with the accessories (vagina, anus, mouth, penis) for sexual stimulation. The parts are sometimes vibrating and may be removable or interchangeable.
Some of the first sex dolls were invented by Dutch sailors in the seventeenth century who would be isolated at sea during long voyages. These masturbatory dolls, referred to by the French as dame de voyage and by the Spanish as dama de viaje, were made of sewn cloth or old clothes and were a direct predecessor to today's sex dolls. The Dutch sold some of these dolls to Japanese people during the Rangaku period, and the term "Dutch wives" is still sometimes used in Japan to refer to sex dolls.
In Japan one can purchase inflatable love pillows or "dakimakura" that are printed with a life-size picture of a porn star or anime character. Other less common novelty love dolls include overweight, intersex, elderly and alien dolls, which are usable for pleasure but also tend to be given as gag gifts. Some inflatable dolls even have the form of children.