Fifteen things the veterans bring to an all-day gym tournament

You can spot the first-year tournament parent from across the gym. They have a purse, a phone at 40 percent and a hopeful expression. By 2 p.m. they are sitting on raw aluminum, eating a $6 soft pretzel, and asking a stranger for a charger. The veterans, meanwhile, are three rows up in a padded seat with a thermos, a blanket and the quiet confidence of people who have done this since the kids were eight.

Nobody is born knowing how to pack for a ten-hour gym day. Here is what the veterans carry, in roughly the order you will wish you had it.

The sitting situation

1. A stadium seat with a back. Bleachers were designed by someone who hated spines. A folding stadium seat that hooks onto the bench weighs two pounds, straps to your bag, and is the difference between walking out of the gym and limping. The ones with a little lumbar curve are worth the extra fifteen dollars.
2. A blanket, even in summer. Convention centers are kept at the temperature of a meat locker, and gyms in January are somehow colder. A packable fleece throw lives in the bag year-round. It is also a seat cushion, a sunshade for the car and a pillow for the kid who fell asleep in the back row.
3. A compact folding chair for the hallway. Not every venue has bleachers at every court, and the hallway between matches is where the real waiting happens. Look for one that folds to the size of a water bottle. You will carry it less than you think and use it more.

The power situation

1. A battery pack that charges a phone three times. Not the little lipstick one. A real one, 20,000 milliamp hours or so, because you will be livestreaming to a grandparent at some point and the venue Wi-Fi will not help you.
2. A six-foot charging cable. The outlet is always six feet from where you are sitting. Always.
3. A small power strip. This is the single most socially powerful object in any gym. Plug it into the one outlet near the bleachers and you have made four friends before the first serve.

The food situation

1. A soft cooler that fits under a bleacher. More on this in another post, but the short version: insulated, flat-bottomed, no bigger than a lunch box per person, with a shoulder strap.
2. Two liters of water per person. The venue sells water for the price of a small car. Freeze one bottle overnight and it is an ice pack until noon and a cold drink after.
3. Real food that does not need a fork. Wraps, hard-boiled eggs, cheese sticks, grapes, nuts, cut vegetables, a sandwich that will not fall apart. You will eat standing up, in a hallway, while watching a bracket update.
4. A thermos of actual coffee. Gym coffee is a rumor. Bring your own and you will be the most popular adult in your section by 9 a.m.

The survival situation

1. Layers. A gym goes from freezing to sauna depending on how many matches are running. A zip hoodie over a T-shirt handles both.
2. Ibuprofen, bandages and antacids in a zip bag. For you, not the kid. The kid has a trainer. You have a bleacher and a pretzel.
3. Earplugs or noise-cancelling headphones for the two-hour break. Eight courts of whistles and referees' chairs is a specific kind of exhausting. Twenty minutes of quiet in the hallway resets the whole afternoon.
4. A paperback or a downloaded show. You will have more dead time than you expect and less signal than you hope.
5. Cash. Some concession stands and most parking lots still do not take cards, and the ten-dollar entry fee at the door is often cash-only too.

The bag itself

A backpack beats a tote, because you will carry it up bleachers with a chair in one hand and a coffee in the other. Water-resistant, one big compartment for the blanket and cooler, outside pockets for the charger and the Advil. Pack it Friday night, keep it packed between tournaments, and restock the snacks on Thursday. That is the whole system.

The parents who look relaxed at hour nine are not more patient than you. They just stopped being surprised by the gym a long time ago and started packing for it. Join them.