What I pack in a cooler box for a hot summer event day

A summer event day with Archie starts long before we drive through the gate. I check the weather, the venue map and the timetable, then work out how much water, ice and food we will need for the hours between dressage, show jumping and cross-country. In Australia, “warm” can mean anything from a pleasant 24°C morning to a punishing day when the float thermometer is already climbing before breakfast.

My cooler box is therefore less about keeping lunch chilled and more about making the whole day manageable. It holds horse-care essentials, safe refreshments for me, damp towels, spare drinks and a few small items that prevent a minor inconvenience from turning into a full-blown drama. Archie still needs his usual routine, even when the schedule is running late and the yards feel like an oven.

I have gradually refined the packing list through ordinary competition mishaps: warm water, forgotten snacks, a missing sponge and one memorable afternoon when the only cold thing left was a bottle intended for the trip home. The box now lives beside my event bag, ready to be loaded with the rest of the gear for a full day at an Australian horse trial.

Choosing the right cooler box

I use a sturdy insulated cooler with a secure lid, rather than a soft lunch bag. A hard-sided esky holds its temperature longer in the back of the car, gives me a clean surface for preparing snacks and is easier to wipe down after a leaky drink bottle. It also copes better with being moved from the float to the stable area several times during the day.

Size matters. A huge family cooler is awkward to carry and encourages me to pack far too much, while a tiny one leaves no room for ice or damp cloths. My preferred size is large enough for several one-litre bottles, two frozen bricks, a container of food and a small sealed pouch of horse-care items. I leave a little empty space so cold air can circulate and everything can be lifted out without rummaging.

Before an event, I freeze two or three solid ice bricks rather than relying entirely on loose ice. Bricks last longer, do not create a puddle as quickly and can be rinsed and reused. If I buy bags of ice, I keep them sealed in a separate bag so melting water does not soak sandwiches, medication packaging or the spare paperwork tucked into the lid pocket.

Drinks for me and Archie

Hydration is the first priority. I pack more plain drinking water than I expect to use, because a hot venue may have taps but no convenient hose, or the available water may be a long walk from the truck. At least one bottle is reserved for me, while the rest are clearly marked for Archie. It is surprisingly easy to lose track when several riders are sharing a water station.

For myself, I take chilled water, an electrolyte drink and sometimes coconut water. The electrolyte drink is useful after sweating through a jacket in the warm-up arena, but it does not replace plain water. I also avoid making every drink sweet, as sugary fluids become unpleasant when they have been sitting in the heat for hours.

Archie’s drinking water stays simple unless my veterinarian has advised something specific. I do not add unfamiliar flavourings or supplements on competition day. Some horses drink readily away from home, while others become suspicious the moment water tastes different. If Archie is reluctant after work, I offer small amounts frequently and use the familiar buckets and routine that he knows from home.

For Australian events, I pack enough water to cover delays. A class can be held up by a loose shoe, a weather stoppage or a long queue at the cross-country start. At venues outside Melbourne, Sydney or Brisbane, the nearest shop may be a distant drive rather than a quick trip to the servo, so depending on local convenience is risky.

Cooling supplies for a worked horse

The cooler box carries clean sponges, two small towels and a roll of disposable bags. The sponges are sealed in a reusable pouch so they remain clean, and the towels are dampened only when I need them. Packing wet towels at the start makes everything cold and clammy, while dry towels give me flexibility throughout the day.

After each phase, Archie gets a careful cool-down rather than a frantic splash and a return to the float. I walk him until his breathing begins to settle, offer water and sponge sweat from his neck, chest and shoulders. If the day is especially hot, I use cool water repeatedly and scrape it away with a sweat scraper, following the current advice from my vet and the event officials.

I keep a small digital thermometer in the horse-care pouch, although I use it sensibly rather than obsessively. His behaviour, breathing, gum colour and recovery matter just as much as a number. A horse that seems dull, distressed or unusually unwilling to drink needs proper attention from the event veterinarian, not a homemade remedy from the cooler.

In Queensland and northern New South Wales, summer humidity can make cooling much harder than the temperature alone suggests. At Victorian events, a dry northerly wind can leave everyone dusty and dehydrated even when the morning feels mild. The box is packed for the conditions forecast, but I still watch Archie rather than assuming the forecast tells the whole story.

Food that survives a long day

My food has to be filling, plain and easy to eat in small bites. I usually pack a chicken or cheese wrap, yoghurt, grapes, a banana and a couple of oat bars. A cold pasta salad also works well if it is in a sealed container, although I avoid anything too messy when I know I may be eating beside the float or in a dusty parking area.

I include salty snacks such as crackers or pretzels because a long day of sweating can leave me feeling flat. The aim is steady energy rather than a large meal that sits heavily before cross-country. I eat something small after dressage, again before show jumping if the timetable allows, and keep a bar in my breeches pocket or grooming bag for the gaps when there is no proper break.

Food safety matters more in an Australian summer than it does on a cool winter competition morning. Perishable food goes into the cooler already chilled, with ice bricks packed around it rather than placed only on top. I use small containers so I am not repeatedly opening one large box, and anything that has become warm is treated with suspicion instead of being saved for the drive home.

I pack a separate bottle of hand sanitiser, paper napkins and a rubbish bag. Event bins can be scarce around temporary yards, and wrappers blowing across a showground are nobody’s idea of good horsemanship. The rubbish bag also gives me somewhere to put used sponges, muddy towels and fruit skins until we are back at the float.

The small horse-care pouch

The cooler is not my complete first-aid kit, but it carries the little items I need repeatedly. Along with sponges and towels, I pack barrier cream for rubbed areas, lip balm, hoof-pick wipes and a few clean cloths. I keep these in a waterproof zip pouch so condensation and melted ice do not damage the packaging.

Archie’s prescribed medication, if required, travels in its original labelled container and follows the instructions from my veterinarian and the event rules. I never put medicines loose in the cooler or use human pain relief for a horse. The box is for keeping approved items cool when appropriate, not for improvising treatment.

I also carry a spare lead rope, extra plaiting bands, sunscreen and insect repellent nearby, although only the small sunscreen bottle goes inside the esky. A wide-brimmed hat and long-sleeved shirt live in the truck. The cooler cannot solve sun exposure by itself, particularly when I am walking between arenas all afternoon.

A printed timetable and emergency contacts are tucked into a plastic sleeve on the lid. Phone batteries can fade quickly when the device is used for photographs, maps and messages all day. I keep the event secretary’s number, the nearest veterinary contact and the float-assistance details available without relying on a signal that may disappear once we are behind a hill.

Keeping everything organised at the venue

I label bottles and containers with my name and Archie’s name. At a busy showground, every blue esky begins to look identical, especially when people are moving between the dressage warm-up and the camping area. A bright strip of tape on the handle makes mine easy to spot and discourages accidental sharing.

The things I need immediately sit at the top: my water, a towel, a sponge and the first snack. Food that must remain cold goes underneath the ice bricks, while the horse-care pouch sits in a sealed container near the lid. This arrangement saves time when Archie has finished a phase and I need to cool him without unpacking the entire box.

I open the cooler as little as possible. Every quick browse releases cold air, so I take out several items at once and close the lid firmly. On a very hot day, I move it into shade beneath the float or a solid shelter, never leaving it in the sun while I walk to the secretary’s office.

The cooler is part of a larger system. Shade, ventilation, water, a safe tie-up area and a sensible work-rest plan matter more than any gadget. I record what I used when I get home, then replace ice bricks, towels and snacks so the kit is ready for the next outing rather than becoming another job on the morning of competition.

What changed after a few hot events

Earlier in my eventing life, I packed according to the timetable and assumed the day would run to plan. Archie taught me to pack according to the conditions instead. A late start can push cross-country into the hottest part of the afternoon, and a quick shower can leave the air steamy rather than cool. Extra water and a flexible cooling plan have become standard.

I now allow time for Archie to recover instead of rushing from one activity to the next because I am worried about being late. His breathing, attitude and willingness to drink tell me when he is ready. If something seems wrong, I contact the official veterinarian promptly. Cooling a tired horse is a welfare responsibility, not simply a way to keep him comfortable between phases.

My own habits have improved as well. I wear sunscreen before loading, keep a spare shirt in the truck and put on a hat before the sun is high. I used to wait until I felt thirsty to drink, but by then I was already behind. Small regular drinks and snacks make it easier to think clearly when I am walking a course, checking tack or trying to remember where I left the stopwatch.

The packing routine has become one of the quiet parts of preparing for an event. I keep notes from each outing and share the ordinary details on Party Pony Eventing, where Archie’s training and competition days are recorded alongside the less glamorous jobs. A cooler box will never make a hot event effortless, but having the right things cold, clean and within reach gives us a much calmer chance of getting through the day safely.