Because no one needs more work, YETI simplified sipping with the Rambler Bottle Straw Cap. This version of the TripleHaul(TM) cap still provides a 100% leakproof, insulated, airtight lock but also has a wide handle opening to accommodate the flip-open straw. Like the rest of the Rambler accessory family, it's spill- and shatter-resistant and safe to throw in the dishwasher. Flip-open straw simplifies sipping TripleHaul(TM) cap handle has a wide straw opening TripleHaul(TM) cap provides a 100% leakproof, insulated, airtight lock Spill- and shatter-resistant Dishwasher safe Fits Rambler Bottle models