• Double-walled, copper-coated insulation keeps drinks warm for 14 hrs, cold for 26 hrs; no condensation
• Made from food-grade 18/8 stainless steel; 100% BPA-free and leak-proof
• Durable and long-lasting; can be used for many years without degradation in quality or performance
• Versatile for various activities: hiking, biking, gym, work, school, and home use
• 18 oz and 22 oz sizes fit most cup holders in cars, bikes, strollers, and bookbags for convenience