Keeping things cool is about more than just a state of mind. It’s actually about keeping drinks and food at the right temperature!
National Cooler Day arrives ahead of the summer season to act as a reminder that coolers are a summer essential. So don’t wait until the last minute – get ahead of the hot weather and keep everything cool, especially throughout the next several months of summer!
How to Celebrate National Cooler Day
Stay super cool this summer with lots of cool drinks, ice, chill snacks and more! National Cooler Day can be celebrated in a range of ways, including some of these ideas:
Get Out That Cooler
For those who have a cooler that has been sitting untouched in the garage or basement all winter long, it’s time to dig it out.
Or if it’s missing, try to remember which friend it was loaned to last! Typically a bit of cleaning is needed after the end of a period of storage, so be sure to wipe the cooler clean with soap and water or baking soda and water, depending on the manufacturer’s instructions.
Now it’s ready for National Cooler Day as well as the other exciting events during the summer where it will be that cooling buddy.
A little “cooler checkup” can make the season smoother, too. Before anyone loads it with ice, it helps to look over a few practical details:
- Check the seal and hinges. A lid that doesn’t close snugly lets cold air escape and warm air creep in. If the gasket looks cracked or flattened, it may be time to replace it or upgrade the cooler.
- Confirm the drain plug works. A loose drain can become a surprise leak in the car trunk or backseat. Tighten it and make sure the threads are clean.
- Deodorize gently. If last season’s “mystery smell” has returned, a paste of baking soda and water or a mild vinegar rinse can help. Let the lid dry completely open to prevent mildew.
- Sanitize after raw food. If the cooler previously held raw meat, extra care is smart. Washing with hot soapy water, then using a sanitizing solution approved for food-contact surfaces, helps reduce the risk of lingering bacteria.
- Restock the accessories. Tongs, a small cutting board, reusable napkins, and a trash bag turn a cooler into a mini mobile kitchen. Ice packs, a thermometer, and a couple of leakproof containers help even more.
The goal is simple: make the cooler feel less like a dusty plastic box and more like a reliable piece of gear. It is hard to enjoy a day outdoors when the cooler is leaking, funky, or full of half-melted ice water.
Make Plans for Using a Cooler
Obviously, National Cooler Day is here to encourage people to use their coolers at their favorite events all throughout the summer.
From a day at the beach to a picnic at the local park, from a day filled with kids’ baseball tournaments to an epic road trip, there are a myriad of reasons to employ the use of a cooler!
Invite friends over for a grill party on National Barbecue Day, head out to the beach for National Beach Day or enjoy eating outside all throughout July in honor of National Picnic Month.
A cooler is also one of those items that quietly improves almost any plan, even when it is not “hot” in the usual sense. Long drives, hiking trailheads, outdoor concerts, fishing trips, community sports, and backyard projects all benefit from cold drinks and safe food storage.
It can even come in handy for errands: a quick stop at a farmers’ market or grocery store is easier when chilled items have somewhere to go before they make it home.
To get the most out of a cooler, planning matters almost as much as the cooler itself. A few habits can keep food safer, ice longer lasting, and snacks more appealing:
- Pre-chill what goes inside. A cooler is designed to maintain temperature, not magically chill warm soda and room-temperature fruit salad. Chilling items in the fridge first means the ice is used for maintaining cold, not fighting heat.
- Pre-cool the cooler. If possible, add a sacrificial bag of ice or a couple of frozen gel packs for a short period before packing. Starting with a cool interior reduces melt.
- Pack in zones. Put items that will be accessed most often near the top: drinks, quick snacks, and anything that tends to get grabbed repeatedly. Keep foods that must stay coldest, like dairy and meats, deeper in the ice.
- Separate food and drinks. If the lid is opened every few minutes for beverages, the internal temperature rises. Some people use two coolers: a “drink cooler” that gets opened constantly and a “food cooler” opened only when it is time to eat.
- Use blocks of ice or frozen water bottles. Blocks melt more slowly than cubes. Frozen water bottles do double duty as ice and drinking water once they thaw.
- Keep it in the shade. A cooler in direct sun has a much harder job. A towel draped over the top, a spot under a table, or the shaded side of a vehicle can make a noticeable difference.
- Limit draining. Draining cold meltwater can speed up melting because the remaining ice loses that cold buffer. Unless the cooler is sloshing unmanageably or the food is in danger of getting soggy, keeping cold water inside can help maintain low temperatures.
Food safety is another quietly important part of “keeping cool.” Perishable foods are safest when kept at refrigerator-cold temperatures.
Packing raw meats in sealed, leakproof containers and storing them at the bottom helps prevent drips onto ready-to-eat foods like fruit, sandwiches, or salads. A small cooler thermometer can provide peace of mind, especially for long days outside or group events where the cooler gets frequent use.
National Cooler Day can also be a playful excuse to elevate the menu beyond the usual chips and sodas. Cooler-friendly ideas include:
- Cold noodle salads packed in tight containers
- Wraps and sandwiches stored in parchment or reusable wraps to reduce sogginess
- Cut fruit with a little citrus to keep it bright
- Sparkling water and homemade iced tea in cans or sturdy bottles
- Pickles, olives, and crunchy vegetables that stay crisp when chilled
- Frozen grapes or frozen yogurt tubes that turn into dessert as they soften
In other words, the cooler does not just preserve food. It can make outdoor eating feel intentional and comfortable, rather than improvised.
Purchase a New Cooler
For those folk who don’t already have a cooler or have one that was leaking or not working well last year, then it might be time to start shopping.
Do some homework in advance and consider purchasing a cooler that is eco-friendly, made with recycled plastic, or has some other sustainability features.
Some options for environmentally friendly coolers include brands that are made from coconut husks, which makes them entirely biodegradable, compostable and natural.
Others might be made out of recycled paper waste, recycled tree pulp, wax and various other sustainable choices.
Buying a cooler can feel surprisingly personal. Some people want a compact lunch-size cooler that can slip under a stroller or into a passenger seat. Others need a big, rugged cooler that can support a full day of group meals. National Cooler Day is a handy reminder to match the cooler to the way it will actually be used.
A few factors help narrow the options:
- Size and capacity. Bigger is not always better. A large cooler that is only half full tends to warm up faster because there is more air space. A smaller cooler packed full of cold items often performs better for short trips.
- Insulation style. Soft-sided coolers are lightweight and convenient, while hard-sided coolers tend to hold temperature longer. High-performance models often use thicker insulation and tighter seals.
- Durability and portability. Wheels, sturdy handles, and tie-down points matter if the cooler will be dragged across gravel, lifted into vehicles, or carried long distances. For casual use, comfort and weight might matter more than extreme toughness.
- Ease of cleaning. Smooth interiors, removable liners in soft coolers, and simple drain design can make a big difference in whether a cooler is pleasant to maintain.
- Organization features. Baskets or dividers help keep delicate foods out of meltwater and prevent crushed snacks. Exterior pockets on soft coolers are useful for napkins, bottle openers, or sunscreen.
Sustainability can be part of the decision without turning the shopping trip into a research project. A few practical, greener approaches include:
- Choose a cooler that lasts. The most eco-friendly choice is often the one that does not need replacing. A well-made cooler that performs for years reduces waste.
- Look for repairable parts. Replaceable gaskets, hinges, handles, and latches extend lifespan.
- Use reusable ice packs and containers. Reusables can reduce reliance on single-use plastic bags and disposable packaging.
- Consider materials thoughtfully. Recycled plastics, responsibly sourced components, and manufacturing practices can all matter. Some specialty products experiment with natural fibers or alternative insulation, though performance and durability can vary.
If a new cooler is not in the budget, upgrading what already exists can still improve performance. Adding more ice, using block ice, pre-chilling contents, and packing efficiently can make a basic cooler feel significantly more capable.
National Cooler Day Timeline
Early American Ice Houses
Thomas Jefferson and other affluent Americans built underground ice houses at Monticello and similar estates, storing winter ice to keep food and drinks cool through warmer months.
Rise of the Commercial Ice Trade
Frederic Tudor’s New England ice business expands, shipping harvested lake ice to U.S. cities and abroad, making cold drinks and chilled food more widely accessible.
First Domestic Electric Refrigerator
General Electric introduces one of the first domestic electric refrigerators, beginning the shift from iceboxes to mechanical refrigeration in American homes.
Commercial Introduction of the Portable Ice Chest
American inventor Richard C. Laramy receives a U.S. patent for a “portable ice chest,” an insulated box that foreshadows the modern picnic cooler.
First Popular Plastic Picnic Coolers
The Coleman Company launches its injection‑molded plastic coolers, lighter and more durable than metal chests, helping make portable cold storage common for picnics and camping.
Foam-Insulated Coolers Become Standard
Expanded polystyrene foam and other plastic foams are widely adopted in cooler construction, improving ice retention and reducing weight for beach, fishing, and road‑trip use.
Rotomolded High-Performance Coolers
Rotational molding techniques are applied to heavy-duty coolers, creating thick-walled, highly insulated ice chests designed to keep contents cold for days in rugged outdoor conditions.
History of National Cooler Day
The first celebration of National Cooler Day took place in 2019 when it was founded by the company, RTIC Outdoors, out of Houston, Texas.
The company is a supplier of rotomolded coolers, which offer excellent cooling capabilities with optimal temperature and ice retention.
National Cooler Day is scheduled to take place annually during this time as a kick-off to the Memorial Day weekend, as it represents the beginning of summer. It’s a great time to locate, source, clean, and get everything cooler-ready in advance of so many fun activities.
While National Cooler Day is a relatively new observance, the object it celebrates has a longer story. Long before modern plastics and high-tech insulation, people used ice houses, cellars, and insulated boxes to keep food from spoiling.
As manufacturing advanced, portable ice chests became a staple for travel, outdoor recreation, and group gatherings, offering a practical way to transport perishable foods and chilled drinks.
Modern coolers now span a wide range: from simple foam models meant for a quick outing to premium rotomolded designs built for high insulation and durability. Rotomolding, a manufacturing process that creates a thick, seamless shell, is often associated with tough coolers designed to endure heavy use and hold ice for extended periods.
That focus on performance fits the spirit behind National Cooler Day: a nudge to get prepared for warm-weather adventures and to keep food and beverages at safe, enjoyable temperatures when people are away from the kitchen.
The day also highlights something easy to overlook: coolers are not just about comfort; they support smarter food handling outdoors. When picnics, sporting events, camping trips, and long drives become more common, a reliable cooler helps reduce food waste and can make group outings more relaxed. Nobody wants a soggy sandwich, lukewarm water, or a frantic search for a store because the ice disappeared too soon.
National Cooler Day, then, is both a celebration of a humble piece of gear and a gentle reminder to treat it like the useful tool it is. A clean, well-packed cooler can be the difference between an outing that feels thrown together and one that feels effortless.
Interesting Facts About the History and Science of Coolers
Coolers may seem like a simple summer essential, but their story is surprisingly rich. From early ice chests in the 19th century to modern insulated designs, and even food safety science, these facts reveal how coolers evolved and why they matter more than we often realize.
Ice Chests Emerged With Mass-Produced Ice In The 19th Century
Portable ice chests only became practical once manufactured ice was widely available.
In the United States, commercial ice delivery expanded rapidly in the mid‑1800s, and by the late 19th century, wooden “ice boxes” lined with zinc or tin and insulated with sawdust or cork were used to keep food cold during travel and picnics long before plastic coolers existed.
The Modern Plastic Cooler Dates To The Mid‑1950s
The familiar hard-sided plastic cooler is a relatively recent invention. In 1954, the Coleman Company introduced its first steel-belted portable cooler, and in 1962, it launched an all‑plastic model, helping to popularize molded insulated chests that were lighter, more durable, and easier to clean than earlier metal or wood versions.
Improper Cooler Temperatures Are A Major Picnic Hazard
Foodborne illness often spikes in warm months because bacteria grow rapidly when cold foods sit in the “danger zone” between 40 °F and 140 °F.
The U.S. Department of Agriculture warns that perishable foods in a cooler should never be left out of refrigeration for more than 2 hours, or 1 hour if the outdoor temperature is above 90 °F, and the cooler’s contents should be kept at or below 40 °F to limit bacterial growth.
How A Cooler’s Insulation Actually Slows Melting
Most hard-sided coolers rely on rigid polyurethane foam between inner and outer walls to slow heat transfer.
Polyurethane has low thermal conductivity, so it traps millions of tiny gas-filled cells that resist heat flow from the hot outside air to the cold interior, which allows ice to last far longer than it would in an uninsulated container.
Rotomolded Coolers Trade Weight For Extreme Ice Retention
Rotationally molded (rotomolded) coolers are formed as a single, thick plastic shell that is filled with dense foam insulation, eliminating many seams where heat can enter.
This design, combined with airtight gaskets and robust latches, can keep ice from fully melting for several days in hot conditions, which is why similar rotomolded construction is used for industrial containers that must hold cold or frozen materials for extended periods.
Disposable Foam Coolers Pose A Long‑Term Pollution Problem
Single-use coolers made from expanded polystyrene foam are cheap and lightweight, but are difficult to recycle and break into small fragments that persist for decades in the environment.
Studies of marine litter regularly find polystyrene foam among the most common plastic debris, leading some U.S. states and cities to restrict or ban foam food and beverage containers, including disposable coolers.
Sustainable Cooler Options Are Being Built From Plants And Paper
To reduce plastic and foam waste, manufacturers have begun producing coolers from renewable or recycled materials such as molded pulp, recycled cardboard, and agricultural byproducts.
For example, some biodegradable coolers use molded fiber made from recycled paper or plant fibers and are designed to keep ice for a day or more, after which the cooler can be composted or recycled instead of sent to a landfill.
