20 Fascinating Things You Didn’t Know About Red Solo Cups

Red solo cups are such a common sight at parties and cookouts, we often don’t think about where this party staple came from. The iconic red Solo cup we know today began its life as a solution to a modern problem: germs.

Before modern science discovered germs (and how they spread) in the early 20th century, public communal drinking cups were common. When it was discovered that sharing cups also meant sharing germs (and disease), the practice swiftly ended. (And in some cities, like Chicago, communal drinking cups were even outlawed. The Chicago Tribune dramatically referred to the common drinking cup as “the cup of death.”)

Disposable cups—made from paper or plastic—were a ready solution and companies quickly churned them out, ever tweaking their designs. Yet only one company, the Paper Container Manufacturing Company, eventually produced a design that became a staple of parties and gatherings everywhere—and an icon in its own right: the red Solo cup.

red solo cup measurements

Here are 20 things you didn’t know about red Solo cups.

1. The inventor of the Solo cup was Robert Hulseman. His father, Leo Hulseman, founded the Paper Container Manufacturing Company in 1936 after a stint with the Dixie Cup Corporation. The company’s first hit were cone-shaped paper cups used at water coolers and drinking fountains. They were called Solo cups (because they were a single-use cup) and they became so popular that the Paper Container Manufacturing Company soon changed its name to the Solo Cup Company.

inventor of the red solo cup - Robert Hulseman

2. Robert Hulseman began working at the Solo Cup Company in 1950 when he was just 18 years old, and by the 1970s, he led the company’s plastics division. During that time, Robert invented the red plastic Solo party cup we know (and still use) today and patented it in 1976.

3. The Solo cup’s humble design actually involved a surprising amount of engineering. Before the cup’s invention, manufacturers had been trying to solve a costly problem: how to prevent disposable cups from sticking to the production molds and how to prevent stacks of disposable cups from getting stuck together.

Hulseman’s design solved these problems with two different innovations. First, the curved lip of his cups prevented them from stacking too tightly. And second, he added small indents at the bottom of the cup that strengthened the base and allowed for airflow between stacked cups.

4. Hulseman first tested his cup design with his family and let his kids pick the original colors from 18 different color combinations. They chose red, blue, yellow, and peach. (Peach is the only color that didn’t stand the test of time.)

5. White was chosen for the cup’s interior because Hulseman thought it would be visually appealing.

6. When the cup first hit store shelves, the yellow cup was the most popular version in Texas.

7. Red far outsells blue, the second-most popular color—and always has. (Yet Hulseman’s favorite cup color was blue.)

8. As of 2021, plastic Solo cups are available in 7 colors: green, orange, purple, red, blue, light blue, and yellow.

How many ounces are in a red solo cup?

9. The Solo cup was first designed in 5-, 7-, and 9-oz. sizes, intending to be used at home or at picnics. Later, Hulseman introduced the now standard 16-oz. size (which holds 18 oz. when filled to the brim).

10. Hulseman became CEO of the Solo Cup Company in 1980 and held the position until he retired in 2006.

11. The Solo cup wasn’t Hulseman’s only popular invention. In 1986, he and fellow inventor Jack Clements patented the Traveler Lid, a lid for disposable coffee cups. It was patterned after children’s sippy cups and had a raised opening to drink from and a recessed area for the upper lip. It became the standard coffee lid at Starbucks and other retailers. In 2004, the Traveler Lid was featured in a “Humble Masterpieces” exhibit at New York’s Museum of Modern Art.

SOLO TLP316-0007 White Traveler Lid for SSP and Bare Paper Hot Cup - 2 Packs of 100 (200 Lids Total)

12. Rumors have suggested that the ridges on the original Solo cup were intended to measure cocktail ingredients or the standard serving sizes of liquor, wine, and beer. According to the company, however, the ridges’ only purpose was to improve the cup’s grip.

Red Solo Cup Measurements

13. That said, the ridges on the original Solo cups do correspond with the standard serving sizes of liquor (1.5 oz.), wine (5 oz.), and beer (12 oz.). Call it serendipity?

14. In an effort to distinguish itself from copycats and lookalikes, Solo redesigned their iconic cup in 2003 and gave it indented sides. It was further tweaked in 2009 and redesigned with a square base. The current model no longer has horizontal ridges.

15. Plastic Solo cups are made from a moldable plastic called No. 6 thermoplastic polystyrene. This plastic is cheap to make but difficult to recycle.

16. Although they’re meant as single-use disposable cups, plastic Solo cups are actually top-rack dishwasher-safe and can be reused.

17. In 2016, People magazine included the red Solo cup in its list of “Top 100 American Icons of All Time.” (Alongside Betty White.)

18. While it was in production, the code name for the 2018 movie Solo: A Star Wars Story was supposedly “Red Cup.”

19. The Solo Cup Company is no longer an independent company but was acquired by Dart Corporation in 2012. It still produces Solo products along with red Solo cups.

20. The use of red Solo cups in college drinking games likely started in the 1980s with beer pong, but the cups have gone on to be used in all types of party games, alcohol-related or not. (See “Fun Games You Can Play with Plastic Cups” at verywellfamily.com.)

21. (BONUS) In 2011, Toby Keith released his hit song “Red Solo Cup.” It was his biggest hit to date and likely the only hit song ever inspired by a disposable drinking cup.

For Red Solo Cup Fans

As with any cultural item that develops a cult-following, there are plenty of products on the market that pay tribute to red Solo cups. If you’re a red Solo cup fan, here are some just for you:

Red Solo Cups
SOLO Cup Company Red Squared Plastic Party, 18 Ounce, 200 Count
  • Contains 200 - 18 ounce plastic party cups (4 bags with 50 cups per bag)
  • The original sign of good times. Achieve iconic party status with America's original party cup
  • 4 Grip areas with a squared base - A secure hold means fewer spills
  • Smooth rolled rim: Great to drink from
  • Bold, glossy, color and bright white interior: 1 great looking cup

Just in case this article has put you in the mood to throw a party.

Red Cup Living is not affiliated with the Solo Cup Company but they sell products inspired by the original red party cup like this ceramic coffee mug.

Red Cup Living Ceramic Coffee Mug
Red Cup Living Reusable Coffee Mug
  • TRAVEL FRIENDLY: Here’s a large ceramic coffee mug made from non-toxic and lead-free strong ceramic which resists chips and cracks. Travel-friendly microwave-safe coffee mugs perfect for home, work, or school
  • ECO-FRIENDLY CONSTRUCTION: Say no more to those cheap disposable cups, Red Cup Living lightweight coffee mug and tea mug is sturdy, easy to hold, and perfect for any beverage. It's an eco-conscious cup for men, women, teens, and especially college kids will love
  • DISHWASHER & MICROWAVE SAFE: Our red coffee mugs are easy to rinse, dishwasher-safe, and microwavable mugs. Stick this insulated coffee mug in the microwave to make a quick coffee, tea, hot cocoa, mug cake, soup, or breakfast oatmeal
  • CONVENIENT HANDLING: Our mug cup comes with a large handle that is heat-insulated, so this coffee mug with a big handle is easy and comfortable to hold as you enjoy your favorite hot or cold beverage
  • 100% SATISFACTION GUARANTEED: We guarantee that the high-quality Red Cup Living mugs will surely please you! If, for any reason, you are not 100% satisfied with Red Cup Living, we will issue you a full refund or an exchange

They also sell a reusable wine cup version.

Red Cup Living Reusable Wine Cup
Red Cup Living Reusable Plastic Wine Cups - 14 oz Red Plastic Wine Glasses with Stem in Classic Red Beer Pong Cup Style - Dishwasher and Microwave Safe - Perfect for Patio Parties, BBQs, and Camping
  • ECO-FRIENDLY CONSTRUCTION: This stemware is made from non toxic plastic that’s BPA and phthalates-free. Red Cup Living’s thick plastic wine goblets are an eco-conscious solution to single use cups
  • TRAVEL FRIENDLY: Each plastic chalice cup is made from break resistant, solid double wall ABS plastic, making these best wine glasses for red wine, white wine, hot cider or mulled wine
  • STURDY DETAILING: Say "no" to cheap disposable wine glasses for parties because Red Cup Living's red cup style large glasses for wine are sturdy, easy to hold and clean, making them the perfect unbreakable stem wine glasses
  • DISHWASHER SAFE: These hard reusable plastic wine glasses are easy to rinse and dishwasher safe. You can even use these red plastic wine glasses for a luxe coffee, cocktail, or hot spiced wine whenever you want
  • 100% SATISFACTION GUARANTEED: We guarantee that the high quality Red Cup Living wine cups will surely please you! If, for any reason, you are not 100% satisfied with the Red Cup Living, we will issue you a full refund or an exchange

And if you want to take your red cup devotion to the next level, there’s also a Christmas ornament.

Red Cup Living Christmas Ornament
Christmas Ornaments Red Cups for Living Room, Outdoor Kitchen, Red Christmas Tree, Christmas Tree Ornaments Set for Room Decoration, Christmas Cups, Camping Cup | Party Decoration | BPA Free
  • 🎄 Bring The College Vibe to Your Christmas Tree - Tired of using traditional Christmas tree decorations? Hang our Red Cup Living miniature ornament cups around your Christmas tree for a decoration that brings a taste of college to Christmas
  • 🎄 Comes with An Easy to Attach Nylon Cord - Each of our kitchen Christmas ornaments comes with a nylon cord which takes the guesswork out of attaching this coffee Christmas ornament and makes it easy to hang anywhere
  • 🎄 Adorable Miniature Design - Here's a charming miniature version of Red Cup Living Cups. This mini red cup goes well with other themed Christmas ornaments. While you could use them as a shot glass to drink out of, it's just so cute to hang up on a small tree or big tree
  • 🎄 Strong and Durable Construction - All of Red Cup Living’s plastic cups are made from non-toxic plastic that’s free of BPA and phthalates and these collectible Christmas ornaments are no different
  • 🎄 Makes a Charming and Unique Gift - These are great Christmas ornaments for friends, family, and coworkers. They also make excellent stocking stuffers, party favors, school prizes, and presents

Ready to get the campfire party started? Check out these 7 Delicious Cocktail Inspired Jell-O Shot Recipes