Aluminum Sports water Bottle 1.marterial is aluminum 2.SGS,TUV,FDA approval 3.food-grade,durable,portable,BPA-free Aluminum Sports water Bottle ·Material:aluminum·Certification:SGS,TUV,FDA·Feature:eco-friendly,durable,BPA-free,special inner coating·Capacity:300ml-1000ml.·More than 7 covers are interchangeable·Any colour printing and your own logos are available