Adding more style to your lifestyle! The Marina is the perfect travel companion — a durable, spill-proof straw tumbler with a detachable insulated coffee mug, for true 2-in-1 functionality. It features a slip-proof silicone rubber base, silicone straw with a spill-proof end cap, and an additional lid for hot drinks. Triple layer insulation helps retain hot and cold, so you can enjoy your drinks for hours.It’s all you need to get through a day at the office — or your next globe trotting adventure. Bon voyage!See-through straw tumbler with detachable insulated mugfeatures:hygienic leak proof straw coverflexible silicone strawremovable strawleak-proof liddurable see-through tritantm tumblerremovable insulated stainless steel mug,insulated sleeve for temperature retentioninner copper liningsilicone rubber slip-proof base,screw on leak-proof flip open liditem: ict400- mug capacity 18 oz / 520 ml- tumbler capacity 28 oz / 845 ml