2 LEAK-PROOF LIDS: Two different and leak-proof lids of the water bottle with straw are made of food grade plastic, 100% BPA-free and can be switched at any time to meet your every demand. Chug lid with screw cap allows for fast water flow when you're feeling the burn. Straw lid allows you to enjoy spill-proof sipping without efforts. Both lids of the insulated water bottles allow easy one-handed or hands-free sipping. Perfect for any indoor and outdoor activities. DOUBLE-INSULATION & HIGH-PERFORMANCE: The insulated water bottle features double-wall vacuum insulation and 18/8 food grade stainless steel. It keeps cold for 24 H or hot for 12 H without altering the taste and keeps your drink fresh. Even filled with ice or boiling water, the double wall insulation of the stainless steel water bottle will never sweat or get hot to the touch! WIDE MOUTH DESIGN & PERFECT SIZE: The opening of the wide mouth water bottles is wide enough to fill much ice cubes form ice machine and make