a hollow cavity which is capable of containing a liquid product within the solid walls defining the hollow cavity the device further comprises a top part the top part is typically the part of the device opposed to the base the top is commonly the part of the device which is provided with an aperture for dosing the laundry product the aperture is generally provided without a closure so that the device can be nested on top of a bottle when not used during the washing process the device may be formed by any convenient means blow molding being the most commonly used preferably the device has an internal volume of at least 20 ml and of less than 500 ml and more preferably less than 300 ml further the device is sleeved whilst any process can be used to attach the sleeve around the outside of the dosing device preferred processes are shrink sleeving and stretch sleeving in these processes the sleeve is generally formed by forming the plastic film essentially into a tube preferably by folding the film back upon itself and forming a seam and cutting the tube to form individual sleeves shrink sleeving is mostly used in the drinks industry whereby.