J-pull doors have a J shape in the door itself and true handleless don’t. A rail behind the door creates a space for fingers to open it. Handless kitchens can create a modern uncluttered look, gives you more space and are particularly good for open plan kitchens. Handless can actually be a cheaper option but may be less practical for those with mobility issues or long fingernails (for example) as opening doors may be a little harder.