• silicone
• Travel mug--large capacity and save space - when empty, folding 1/2 size of bottle to make it more compact which can help you save much space,expandable kettle
• Expandable kettle--reusable water bottle - use it everyday instead of bottled water, reduce plastic water bottle and disposable cups waste,leak proof water bottle
• Foldable water bottle--stylish - you can it on your waist belt or put it in bike bottle shelf, backpack, and luggage, for traveling, hiking, camping, cycling, running, daily walking, picnic etc, outdoor activities,expandable kettle
• Leak proof water bottle--convenient - handles hot or cold drinks; freezable; collapsible; easy to refill and add ice cubes or fruit through wide mouth,expandable kettle
• Collapsible silicone bottle--healthy - made of food-grade materials; of , phthalates, , latex, and other harmful leaching chemicals thick silicone folding and manufactured with leak proof sealing technology,expandable kettle