THIS DOUBLE-WALLED, VACUUM-INSULATED 18/8 STAINLESS STEEL BOTTLE KEEPS DRINKS COLD UP TO 31 HOURS OR HOT UP TO 11 HOURS. IT'S 100% BPA-FREE AND COMES WITH A LEAK-PROOF AUTOSEAL LID, A HIGH-FLOW SPOUT AND COVER TO KEEP DIRT OUT, AND A SLIDE RESISTANT RUBBER BASE RING. COMPLIES WITH PROP 65. 12" W X 3.56" D