UrthBox Snack Box - Classic (Small) ORGANIC AND NON-GMO GLUTEN-FREE, VEGAN & DIET OPTIONS FREE SHIPPING TO THE U.S. Get started today and bring more of the healthy stuff into your life every month. Just as BirchBox provides its customers a sampling of health and beauty items, UrthBox will give subscribers a monthly collection of snack items. Select a box size then Select from Classic, Gluten-Free, Vegan or Diet box options.