How to Stay Cool While Traveling This Summer (When You Can't Control the Thermostat)

Here's the part of summer travel nobody mentions: you can plan the trip down to the minute, but you don't control the room. The hotel thermostat is capped, the Airbnb AC is "vintage," the unit under the window rattles but doesn't cool, and the front desk closes at ten. If you run warm, that turns a great day into a long, sticky night.

The honest fix isn't fighting the thermostat. It's deciding the climate you sleep in before you leave, by packing a few small things that keep you cool no matter what the room does. None of it fills a suitcase. Here's how to pack for it.

(General comfort and travel information, not medical advice.)

Start with the packing list, not the suitcase

The trick to packing cool gear is choosing pieces that earn their space. You want things that are light, packable, and pull double duty — not a second bag of gadgets. Three categories cover almost every hot-room scenario:

• Something wearable and portable for the moment you feel warm — on the plane, in the rental car, or in bed.
• Breathable, moisture-wicking sleepwear so the room's temperature matters less.
• A fast reset you can chill in any mini-fridge and keep by the bed.

Coolside is built around exactly these — small, well-made cooling and sleep pieces for the in-between years. If you're traveling and want the packable end of the lineup, the Nightshift Wearable is the one most people reach for first.

1. Pack a portable, wearable cooler

The single most travel-friendly cooling item is something you wear, because it goes everywhere the room can't follow you. The Nightshift Wearable ($59) is a rechargeable neck cooler that runs about four hours on a charge — it sits at the back of your neck, one of the spots where you feel heat most, and keeps that contact point cool. It's cordless and light enough to slip into a personal item, so it works on the flight, in a warm taxi line, and again in a stuffy hotel room at midnight.

Because it's rechargeable rather than something you have to freeze, it's the rare cooling tool that works on the road, where you can't count on a freezer.

2. Bring sleepwear that does the cooling for you

When you can't lower the room temperature, your fabric choices do the work instead. Breathable, moisture-wicking material moves heat and moisture away from your skin so a warm room feels less warm against you. Loose, lightweight pieces beat anything tight or heavy, and natural breathable fabrics like silk stay cool to the touch and pack down flat.

For the deeper version of this — which fabrics breathe, what to skip, and how to layer so you can shed fast — see our guide on what to wear to bed when you run hot. If you want to bring your own cool surface to sleep on, the packable Silk Sleep Set ($49) is a 22-momme mulberry silk pillowcase that goes over whatever pillow the hotel hands you — cool to the touch, light, and gentle on skin and hair.

3. Build the hot-hotel-room sleep setup

A few minutes of setup turns a warm room into a sleepable one. When you check in:

• Set the thermostat as low as it goes the moment you arrive, and aim a fan or the AC vent toward the bed. Moving air feels cooler than still air at the same temperature.
• Strip a layer off the bed. Hotel duvets are heavy and hold heat — sleep under the top sheet alone if the room runs warm.
• Slip your silk pillowcase on, so your hottest contact point stays cool even after the room warms up overnight.
• Keep your wearable cooler on the nightstand, charged, so it's a one-second reach if you wake up warm.
• Chill a reset in the mini-fridge. A Cool Eye Mask ($29) tucks into a corner of the fridge and gives you a cold, fast reset for the back of a warm night — it's flat, light, and packs in a side pocket.

4. Stay cool on the road, too

The room is only half the trip. Airports, rental cars, and afternoon sightseeing all run hot in summer. A few habits carry the cool through the day:

• Wear loose, breathable layers you can peel off, so you're not stuck overheating in line.
• Keep water on you and sip steadily — staying hydrated helps you feel cooler in the heat.
• Wear your portable neck cooler for the warm stretches: the boarding line, the walk from the car, the crowded museum.
• Duck into shade and air conditioning on purpose during the hottest part of the afternoon, then save the walking for early morning or evening.

The packable short list

1. A rechargeable, wearable cooler — works on the plane, in the car, and in bed.
2. Breathable, moisture-wicking sleepwear and a packable cool sleep surface.
3. A flat reset you can chill in any mini-fridge and keep by the bed.
4. A setup routine: low thermostat, fan on the bed, fewer layers.

None of it controls the thermostat. All of it means you don't have to.

Browse the packable cool-sleep shelf →

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