Custom mason jars add the element of personalization to these practical items. Trendy and useful, it’s no wonder mason jars are a hit. Now, with no minimum order quantity (MOQ), you can customize them easily and affordably for you. With a diameter of 3.1" and a height of 5.1", each of these customized mason jars come with a twist-on stainless steel lid and a reusable straw.