WATCH THE COLORS TRANSFORM LIKE MAGIC – Fill with your favorite cold beverage and watch the cups change color before your eyes mannahydration — the temperature-activated color-change effect is a guaranteed crowd-pleaser for kids and adults alike at parties, cookouts, and everyday use. COMPLETE SET — CUPS, LIDS & STRAWS ALL INCLUDED – Every set includes matching splash-resistant lids and straws. 25 OZ CAPACITY WITH CUPHOLDER-FRIENDLY DESIGN – At 24 oz, these cups hold as much as a Venti iced drink and fit most standard cup holders, so they're just as at home in the car as they are on the picnic table. STACKABLE, REUSABLE & BUILT TO LAST – Durable construction means these cups hold up party after party; the stackable design keeps storage neat and compact in any cabinet or pantry, saving space between uses. EASY TO PERSONALIZE & DECORATE AT HOME – A favorite among crafters — the smooth surface takes decals, stickers, and custom designs beautifully, making these ideal for birthday favors, wedding welcome bags, school events, and personalized gifts. The party cup that does more than just hold your drink — the Manna 24-Piece Original Color-Changing Cup Set is our #1 best-selling set for a reason. Each reusable cup is made with temperature-sensitive material that shifts color the moment a cold drink hits it, creating a wow moment every single time. Fill with iced lemonade, a smoothie, cold brew, or any chilled beverage and watch the transformation happen in real time. The matching lids and straws even change to coordinate with the cup's new hue — it's the kind of detail that makes people do a double take. With 24 cups, 24 lids, and 24 straws in bold, mix-and-match rainbow shades, this set is built for crowds — backyard barbecues, birthday parties, school events, team gatherings, or just making Tuesday feel more fun. At 24 oz each, there's plenty of room for a full drink, and the cups fit standard cup holders so the fun doesn't have to stop when you get in the car. Crafters love them too — the smooth surface is perfect for vinyl, stickers, and designs, making them a popular choice for personalized party favors and gifts. Durable, reusable, and endlessly stackable for easy storage. Hand wash only. Not microwave or dishwasher safe. Color-change effect is temperature-dependent; for best results, rinse with warm water before filling with a cold beverage.