Asobu®'s See Through Travel Mug with Handle & Detachable Insulated Tumbler combines a Tritan™ tumbler with an attached stainless steel coffee tumbler. Offering diverse beverage options. Travel Mug is 34 Oz./Tumbler 25 Oz. Travel Tritan™ tumbler combines with a stainless steel coffee tumbler. Travel Mug features a single lid that fits both the tumbler and travel mug. Fits standard cup holders with a silicone non-skid base for stability and safety.