Come and Check Our Promo Solutions.Matte Cork Base Tumbler. Made of stainless steel. Double wall with copper vacuum insulation. Clear push-on lid with sliding closure, and synthetic cork base. Unisex and widely used in daily drinks. Complies with Prop 65. 3.5" W x 6.5" H. 16 oz Tumbler. Pls check inventory and detailed info with us before placing your orders.