Yeti Rambler 30 Oz Tumbler Sliding Lid Insulated Stainless Steel Dishwasher Safe Hangers 4 oz) 85% recycled polyester 15% spandex flat top with multi 4 oz) 85% recycled polyester 15% spandex jersey with miDori™ bioSoft for added wicking and softness and the vibe that's just right for your busy 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 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