A personal climate kit is a small set of body-worn devices that let you adjust your own comfort independently of the building or the weather: typically a wearable fan, a pair of rechargeable hand warmers, and a case that keeps both intact between seasons. The reason to think of it as one kit rather than two purchases is calendar arithmetic. Northern-hemisphere summer runs June to September; Australian summer runs December to February. A household that buys cooling in July and warmth in January owns two half-year products it forgets about; a household that treats it as one rotation keeps both in the same drawer, charged, in the same case. If you travel between hemispheres the case is not clever — it is required.
The problem with buying seasonally
Seasonal gear has a predictable failure pattern. You buy it at peak need, when attention and price are both highest. You use it hard for eight weeks. Then it goes into a drawer uncharged, and lithium cells that sit at a low state of charge for six months come back weaker than they went in. By the next season it is either flat, missing its cable, or in a box you cannot find.
The alternative is unglamorous: treat personal climate as a single kit with an annual rotation, stored together, topped up twice a year. It is the same discipline as a first aid kit, and it works for the same reason.
The summer half
A wearable fan is the highest-value cooling object you can carry because it works on the only cooling mechanism your body has left in the heat: evaporation. It has real limits — above roughly 35 °C (95 °F) the US EPA and CDC advise against relying on fans for cooling, because moving very hot air across skin can add heat — and we set those out properly in the outdoor cooling guide.
Within its limits, though, it does three jobs at once. A belt-clip fan for the walk between air-conditioned places. A 10,000 mAh power bank, which is the thing you actually run out of on a long summer day. And an LED work light with an SOS mode for the evening end of the same day.
Solis Breeze 3-in-1 Waist Fan
Belt-clip fan, 10,000 mAh power bank and SOS work light in one 290 g unit. Up to 40 hours on speed one.
$89 — view product →
The winter half
Warmth is easier to get right, and easier to get wrong dangerously. A pair of rechargeable hand warmers that regulate to published temperatures — 45, 50, 55 and 60 °C — and snap together magnetically into one pocket-sized block covers the entire cold-weather comfort problem for most people. Two warmers rather than one matters more than any other specification, because one warmer heats one pocket and people swap hands.
Battery safety is not a footnote in this category. In 2026 the US CPSC recalled 1.5 million rechargeable hand warmers from another brand after 1,480 overheating reports, 15 fires, 350 burn injuries and one death. Our hand warmer safety guide covers what to check and how to store and dispose of these devices properly.
Solis Ember Twin Hand Warmers
A magnetically paired set that reaches temperature in about two seconds, with four regulated levels from 45 °C to 60 °C.
$69 — view product →
The rotation, month by month
| Period | Northern hemisphere (US, UK, EU) | Southern hemisphere (AU, NZ) |
|---|---|---|
| Dec – Feb | Warmers in daily rotation. Fan stored at ~50% charge. | Fan in daily rotation, including as a beach power bank. |
| Mar – May | Both in the bag. Shoulder weather swings 12 °C in a day. | Both in the bag. Mornings cool, afternoons still hot. |
| Jun – Aug | Fan in daily rotation. Warmers stored at ~50% charge. | Warmers in daily rotation. |
| Sep – Nov | Both in the bag; warmers back to daily by late October. | Fan back to daily by late October. |
Two maintenance habits make the whole thing work. Store lithium devices at roughly half charge, not empty and not full, when they are going into a drawer for months. And put the season's out-of-rotation device in the case with its own cable — the cable is what goes missing, not the device.
Solis Carry Case
Moulded EVA hard shell with a repositionable divider, sized for one Solis device and its cable.
$24 — view product →
If you travel between hemispheres
Anyone flying London to Sydney in December, or Melbourne to Berlin in July, meets both climates inside twenty-four hours. Three practical points:
- Lithium devices go in cabin baggage. That applies to the warmers and to the fan's power bank. Airlines set their own watt-hour limits — check the carrier, not a general article.
- Charge everything before you fly. A power bank you cannot switch on at security is occasionally treated as an unknown device.
- Pack them together in one hard case. Beyond convenience, it means one item to present rather than three loose objects in a tray.
What this costs to assemble
| Piece | Role | Price |
|---|---|---|
| Solis Breeze 3-in-1 Waist Fan | Summer half — cooling, power bank, work light | $89 |
| Solis Ember Twin Hand Warmers | Winter half — a regulated pair, both hands | $69 |
| Solis Carry Case | Storage and transport for whichever is out of rotation | $24 |
For the wet weeks in between, the kit has a third piece: the Solis Tidemark rain jacket, a hooded shell that is black when dry and shows a bright pattern where rain hits it — dry on a commute, and easy to see in exactly the weather where visibility drops.
The whole Personal Climate collection is built around this rotation rather than around a season, which is why the fan and the warmers share a charging standard and a case size.
Frequently asked questions
What is a personal climate kit?
A small set of body-worn devices that let you control your own comfort independently of the building or the weather — usually a wearable fan, a pair of rechargeable hand warmers and a hard case. The point is that they rotate through the year rather than being two separate seasonal purchases.
How should I store battery devices between seasons?
At roughly half charge, at room temperature, out of a hot car and away from anything flammable, with their cable in the same case. Lithium cells left flat for six months come back measurably weaker.
Do I need both if I only live in one climate?
Most places have both problems, just unevenly. If your year genuinely only swings one way, buy the half you need — but the case is worth having either way, because it is what keeps the cable attached to the device.
Can I fly with these?
Yes, in cabin baggage. Both the fan's 10,000 mAh power bank and the warmers' cells are lithium-ion, which airlines require in the cabin rather than the hold, subject to their own watt-hour limits.
Sources
Written by the Solis Fortune editorial team. Specifications quoted are the published manufacturer figures for the products linked above; where a supplier publishes no figure we say so rather than estimate one. Regulatory summaries are general information, not legal advice — check the rules that apply where you live before you buy.