Castle Kid Jumping Castle Rentals is Durham Region’s top-rated bouncy castle rentals, water slides, obstacle courses, and inflatable games, proudly serving Oshawa, Whitby, Ajax, Pickering, Bowmanville, Courtice & the Greater Toronto Area. We specialize in backyard parties, school fun fairs, church corporate & major events -offering TSSA-licensed, fully insured inflatables for the safest and most reliable experience in Ontario.