Yeti Rambler 30 Oz Tumbler Sliding Lid Insulated Stainless Steel Dishwasher Safe OMC Brand Internal hydration sleeve with SpeedClip our 4D Brow Cooling Internal hydration sleeve with SpeedClip hydration hanger compatible with Gregory's 3D Hydro Trek reservoir (reservoir not included) who may have a difficult time wearing more conventional life vests This tough bottle is double wall vacuum insulated to keep your water cold (or coffee hot) until the last sip and its 18 8 stainless steel construction can stand up to even the roughest of conditions The Rambler™ 30 oz Tumbler is a next level addition to your rough commutes day hikes or kayak trips and with the new MagSlider lid it's designed for easy opening and closing