These are a very simple design intended to hold a portion cup as a water, food, etc. dish. While they could be used without a liner, we have designed them to use portion cups as a liner, and we highly recommend that you do as a matter of ease and cleanliness.
Note: Currently our cup holders are all manufactured to order, so depending on your order and if there are any other orders currently being made, there could be a short delay (usually 1-3 business days) between placing your order and us being able to ship it out. Using this method allows us to offer you a much better selection at much lower prices than if we have to build and maintain an inventory of every item.