Corkcicle Tumbler Straw (2 Pack) Hydration Belts & Water Bottles : Stay ready to sip in style with the Corkcicle Tumbler Straw (2 Pack). The special straws are made from a durable and easy to clean stainless steel and fit both sizes of Corkcicle Tumbler. Featured in a set of two straws. Made of durable stainless steel.