【Excellent materials】Our Plastic Protein Shaker sport Bottle is made of PP material. Our newest mixer cup is Food Grade BPA free, Non toxic, tested for US/EU food safe standards. The bottle won’t affect the taste and protein. Dishwasher clean easily and microwave oven heating safety . Our fitness sport water bottle is your first choice 【Efficient mixing】Our Shaker Bottle for protein mixes contains a stainless-steel spring ball, so the coil can break up protein agglomerations when you shake the mixer cup protein , smoothies and coffee perfectly. 【measurement lines】Protein Shaker water Bottle 16oz(500ml) (actually the real Water Bottle can be up to 20oz(600ml) ) Our large water bottle is good for you to replenish water after sporting. 【Fitness first choice】Our Gym Shaker Water Bottle is W/ advanced professional design. Separately portable boxes is good for you to disassemble. extra large space(additional 100cc ,150cc ) & portable tank can expand your water need. 【Special design】The portable protein mixer shaker bottle is 100% leakage proof. Bottle body with non-slip design will help you to hold on easily.Addition, extra 2 attachable cups for capsule and powder holder on each bottle