Set of 4 SkinnyTumblers by Marrs – Regulates tempatures with sealed double wall BPA free high grade insulated acrylic construction reduces condensation and stays comfortable to touch Product dimensions are 8-1/2?? in height with a base diameter of 2-1/2.?? Skinny tumblers are the perfect size plastic cup that holds 16oz 4 – 16 oz in size, includes matching straw & lid, and features a double wall. Perfect for personalizing. Think names for your bridal party, family reunion, even teacher gifts. You will love these tumblers.