Performas 28 ounce Spartan PerfectShakers are durable， secure and leakproof protein bottles. With the twist-lock cap and firm， snap-on covers， youll never have to worry about your pre-workout or protein leaking. Performas bottles are so lightweight and portable， theyre perfect for any athletes busy and on-the-go lifestyle. These protein shakers are the top-ranked amongst their competitors for strength and durability. With Performas fully licensed protein shaker bottles， you are free to express yourself and give people a taste of who you are! 28 ounces (800ml). 100% officially licensed. Lightweight and portable. Extra-wide mouth. Screw-on lid without rubber seal. Mix， pour， and store all in the same container. Leak free. Duraplex shatter resistant plastic. Actionrod technology for a perfectly blended drink every time. BPA free. Long-lasting UV ink designed to protect from fading and chipping. Odor-resistant technology. Dishwasher safe.