Temperature play is a form of BDSM sensual play where objects and substances are used to stimulate the body's neuroreceptors for heat and cold for sensual effect. Substances can include water, oil, molten wax , ice, chocolate syrup, whipped cream, melted butter, chilled fresh fruit and steamed vegetables. Objects can include cutlery, ball chains, necklaces and many others, often pre-heated in hot water or chilled in ice water. Space heaters, radiators, and other sources of heat can also be used for stimulating sensory arousal with heat.