• silicone
• Foldable water bottle: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,travel mug
• Collapsible silicone 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,travel mug
• Expandable kettle:reusable water bottle - use it everyday instead of bottled water, reduce plastic water bottle and disposable cups waste,travel mug
• Leak proof water bottle:convenient - handles hot or cold drinks; freezable; collapsible; easy to refill and add ice cubes or fruit through wide mouth,travel mug
• Travel mug:healthy - made of food-grade materials; of , phthalates, , latex, and other harmful leaching chemicals thick silicone folding and manufactured with leak proof sealing technology,foldable water bottle