Patented, Available in 16 different colors, Vacuum insulation provides 9X heat retention, Lead-free vacuum seal, Powder coated body with silicone band accent, Lid comes apart for easy cleaning, Lip groove allows for drinking spout to be positioned without even looking, Leak-proof screw-on lid with visual open/close push button locking closure, Dual wall Stainless Steel with Copper-lined deep draw liner,