A conditioning garment has an array of tubes (11) for passing heated/cooled fluid to heat/cool a wearer of the garment. The array of tubes (11) terminate at a connector (16) for connection to a source of heated/cooled liquid. The connector (16) comprises a male part (15) and a female part (17) with a releasable latch (22, 34, 40) acting between the male and female parts (15, 17) to hold the male part (15) in engagement with the female part (17). The releasable latch includes a release member (40) moveable in a rectilinear path away from the connector (16) to release the latch and allow separation of the male part (15) from the female part (17). The male and female parts (15, 17) are self-sealing on disengagement. This allows for automatic separation of the male and female parts (15, 17) in an emergency.