blenderbottle prostak 22 oz bottle with 6 piece twist n’ lock storage set, black scs direct blenderbottle prostak 22 oz bottle with 6 piece twist n’ lock storage set, black - leak-proof, expandable, and unbelievably powerful, the blenderbottle prostak is the all-in-one solution for the serious athlete. the patented blenderball wire whisk delivers smooth shakes every time, while the unique twist n' lock jars offer unlimited storage expandability. keep powders and pills in place - with or without the bottle. the prostak's unique interlocking jars have individual lids, making it possible to carry pre- and post-workout supplements, meal replacements, and snacks, even without the bottle. the pro stak's screw-on lid and leak-proof sureseal flip cap keep your shake where it belongs. with a snug twist of the lid and the assuring snap of the flip cap, you're ready for some serious shaking. the blenderball wire whisk delivers lump-free protein, nutrition, and meal replacement shakes, even blending flavorful additions such as peanut butter, yogurt, and oat flour. blenderbottle prostak twist n' lock storage jars expansion paks expand the capacity of the blender bottle pro stack system, making it easy to carry more proteins, powders, vitamins & pills, supplements and more. the prostak’s unique interlocking jars have individual lids, so it’s possible to carry it all with or without the bottle. the covert pill tray locks into any jar lid, allowing users to carry pills and powders in the same jar. the 2-pak comes with 2 extra-large 250cc jars and the pill holder. blender bottle prostack twist n' lock storage jars expansion paks are made from the same great materials as all blenderbottle products, are dishwasher safe, and bpa- and phthalate-free. includes 22 ounce capacity blenderbottle, one 250 cc jar, two 150 cc jars, two 100 cc jars, two pill organizers, and patented blenderball wire whisk. the blenderbottle prostak is expandable with extra twist n' lock jars.