This combo of stainless steel touchless trashcans are designed and engineered by NINESTARS, the world's first legal patent holder. With one kitchen-sized and one bathroom-sized, you can use them in any room you choose, such as the kitchen, office bathroom, dorm room or a kid's room. These two trash cans use the most advanced sensor technology which can be found in all Ninestars trash cans. Pass your hand or debris within ten inches or a 130° angle from the infrared sensor and the lid will automatically open. The lid will remain open if debris or your hand remains within the range of the infrared sensor. After your hand moves away from the lid, it will close automatically. Each can includes a ring liner to keep trash bag from public view for a neat and clean appearance.