Best Smoothie Cups for Adults

This is the pick for adults who make smoothies from greens, collagen or protein powders and want to blend them where they drink them. The 24 oz tumbler is double-wall insulated stainless steel, and it ships with a BlenderBall that does the mixing, plus a lid you can use as a straw cup or a swig cup. When the straw is removed, the lid seals fully.

Owners report that drinks stay cold for a long stretch, that the ball breaks up clumps well, and that the bottle spills nothing in a bag. They also mention it works for iced protein coffee as well as smoothies, and they like the colors. Cleaning draws two answers: it is called simple by one side, while the other reports trouble.

It is a mixer first, so a smoothie that has already been blended gains little from the ball, but the insulation and the sealed lid still do their job.

For adults who want the neutral taste of glass without giving up a travel-friendly shape, this 18 oz tumbler is our favorite of the glass options. A silicone sleeve gives a non-slip grip, doubles as a coaster, and stays on during washing; the tumbler and straw go in the top rack of the dishwasher. Owners report the sleeve's texture catches condensation so the glass feels wet but not slippery, and that the pieces come apart easily for washing.

The lid is where the caution sits. It is wooden and hand wash only, and owners report that it does not always stay on, that the cup can spill when knocked over and that the straw opening can leak when tilted. Durability is described both ways: owners report the glass surviving drops, and also report it shattering or the wood cracking.

Against the Capsule Classic Glass Mason Jars 16 oz, this one trades a wide straw for a built-in sleeve and a single-cup format.

This is a set rather than a single cup: six borosilicate glass cups, six lids that work for sipping or with a straw, six silicone sleeves in different colors, six glass straws with silicone tips and two cleaning brushes. The colored sleeves help guests and family tell cups apart, and the glass is listed as safe from -68°F to 212°F. Owners say the cups look as pictured, wash well in the dishwasher and come apart for a thorough clean.

The weak spot is the lids. Owners report they seal poorly or sit loose, and there are mixed reports on whether they fit the cups and cupholders properly. Opinions on the glass straws split too, and durability is described both ways, with reports of tough glass on one side and breakage on the other.

If a household cares more about lid security than about the number of cups, the Ello Devon 18oz Glass Tumbler is the steadier single pick, though its lid also needs care.

These 16 oz borosilicate jars come as a pair, each with a wide stainless steel straw, a plastic lid with a straw opening and an extra metal lid. The wide straws are designed so pearls, thick shakes and fruit pieces pass without clogging, which is the point for a thick smoothie. Owners report the jars are good quality, suit iced coffee, smoothies and bubble tea, clean up easily and travel well in a car cupholder.

Two cautions come up. Owners report the jars run smaller than the listing suggested, and leaks come up too, which fits a design described as leak-resistant, not leakproof. Compared with the DWTS DANWEITESI 24 oz Glass Cups, the capacity is lower, so a big breakfast smoothie will not fit in one.

Where this set stands out is variety: four 24 oz wide-mouth glass cups, bamboo lids, plastic lids with a hole, sealed plastic lids for storage, glass straws and two brushes. That makes the cups suitable for smoothies, iced coffee or boba, and for keeping leftovers. Owners report the size holds a generous smoothie plus ice, that the cups look neat and that they wash easily by hand or in the dishwasher.

There are real cautions. Owners report that bamboo lids can fail to stay on, that lids have cracked and that the glass straws can break if the cup is bumped when empty. The glass itself is not insulated, so cold drinks sweat and the ice melts faster than in steel. A chipped cup on arrival has also been reported. The sealed plastic lid is the answer when the bamboo lid is not leak resistant.

Compared with Simple Modern Iced Coffee Tumbler 24oz, this set is the one to keep at home; the steel tumbler is the one to carry.

This 24 oz tumbler is the one we would hand to someone who drinks a smoothie on the move. It is built from 304 (18/8) stainless steel with double-wall vacuum insulation that keeps drinks cold or hot and stops condensation, and the spill-resistant straw lid grips the straw through a silicone gasket. The tapered shape fits cupholders, and it carries a limited lifetime warranty.

Owners report that it does not leak even when tipped, that it keeps drinks cold all day, that it fits car cupholders and that the matte black and other colors look good. They also mention a second lid with a different opening. Durability is described both ways: owners report it lasting all day, and also report that it scratches easily and that the flip lid hinge broke within a week.

Against the Velomix Stainless Steel Shaker Bottle 24oz, it has no mixing ball, so it suits smoothies that are blended before pouring.

Built for protein, creatine or meal-replacement mixes, this 24 oz stainless steel bottle includes a whisk ball to smooth out powder and measurement marks inside up to 20 oz. The flip-top lid opens with one hand, the vacuum insulation is listed at up to 24 hours cold, and the wide mouth makes scooping and rinsing easier. The lid is dishwasher safe, but hand washing the cup is recommended to protect the finish.

Owners report good mixing, solid cold and hot retention and good quality for the money. The lid is the weak point: owners report that the seal is tight in one account and leaky in another, and that the plastic lid feels cheap next to the steel body. Some also say the bottle is not leakproof or insulated as advertised.

Shakers suit powders in the cup; for a smoothie blended first, pair the cup with the best blender for thick smoothie bowls, then pour into something like the BlenderBottle Stainless Steel Shaker Bottle 24 oz if you also want a swig lid option.