Asobu Marina Tumbler & MugWe're not saying our Blue Marina 2 in 1 Tumbler is a work of art but we're definitely not saying it isn't! 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 heat and cold, so you can enjoy