The coolest KeepCup Cold Cup, insulated steel Thermal is for keeping things cool.Double-wall vacuum insulation keeps cold to the last sipNo taint to taste with 18/8 high quality electropolished steel Press in lid with spillproof valve Maximum fill 10mm below brim50% recycled clear lid with central clear 8.5mm coffee straw Stackable drafted cup for the perfect pour. Enjoy lid on or off BPA-BPS free, non toxic Dishwasher-safe top rack Fits in car cup holders.