THE SECRET IS STANLEY'S AEROLIGHT™ FEATHERWEIGHT TECHNOLOGY THAT DOESN'T COMPROMISE ON DURABILITY OR THERMAL PERFORMANCE. YOUR WATER WILL STAY COLD FROM THE TIME YOU LEAVE HOME UNTIL WELL AFTER QUITTING TIME. THE DRINK-THROUGH LID LOCKS TIGHT FOR LEAKPROOF CARRYING. LASER ENGRAVING OFFERED AT $4.50(V) RUN CHARGE. COMPLIES WITH PROP 65. 2.7" L X 2.8" W X 9.5" H