A speculum 1 is provided, comprising two or more blades 4, 5 moveable between an open and a closed position. A polyisoprene or silicone tubular sheath 9 is attached to at least one of the blades 4, 5, the sheath 9 being arranged to retain the lateral walls of the body cavity when the blades 4, 5 are in the open position. Sheath attachment means 12 provided on one of the speculum blades 4, 5 facilitate attachment of the sheath 9 to the blade 4, 5, the attachment means 12 comprising at least one patch or strip of adhesive material extending in a longitudinal direction of the blade. The sheath 9 may be manufactured by dip moulding.
