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Tethys range — single dorsal circuit

TRAMONTANA

The lightweight dorsal cooling vest.

A single active thermal circuit, concentrated where the body sheds heat best: the back. The same patented technology as Tempesta, built for people who move all day long.

< 900 g
Total weight
30 W
Thermal power
> 3h30
Battery life
< 48 dB
Noise level
The context

Dorsal cooling, without compromising mobility

Delivery drivers, forklift operators, maintenance staff, logistics teams: jobs that involve constant movement combine physical effort with prolonged heat exposure, and rarely allow for heavy equipment worn all day. Tramontana addresses the problem on the back, close to the body, without weighing down movement.

Three reasons

What changes day to day

Light

Under 900 grams

System and battery included, nearly twice as light as Tempesta. Worn for hours without extra fatigue, even in constant motion.

Discreet

Under 3 cm, under 48 dB

Tramontana fits under or over work clothing and goes unnoticed, at the workstation or on the move.

Autonomous

USB-C 74 Wh battery

Over 3h30 of continuous battery life, with a second battery set available to cover a full day without taking the vest out of service.

Under the mesh

The same science, focused on the essentials

Dorsal circuit

All thermal power is dedicated to a single exchange zone, placed against the back, where contact surface is widest and most stable, even under exertion.

Patent WO 2024/141723

Tramontana carries the active thermal exchange technology patented by Tethys, born from space and nuclear programs, already proven in the field with Tempesta.

Water, simply

The working fluid is water: nothing to freeze, nothing to replace, no cold-refill logistics.

Auto cutoff at 50°C

In heat mode, the system automatically pauses for two minutes once it reaches 50°C, with no action needed from the user.

In pictures

Tramontana from every angle

Technical sheet

Specifications

Total weight
< 900 g
Maximum thickness
< 3 cm
Thermal power
30 W (system)
Power supply
USB-C 74 Wh · 15 V
Battery life
> 3 h 30
Operating range
-20°C to +50°C
Working fluid
Water
Noise level
< 48 dB
Heat mode safety
50°C cutoff (2 min pause)
Sizes
M · L · XL
Warranty
2 years
Patent
WO 2024/141723 A1
Choosing your vest

Two answers, two needs

TRAMONTANA

Designed forMobility
Zone coveredDorsal circuit
Power30 W
Weight< 900 g
Battery life> 3h30
SizesM · L · XL

TEMPESTA

Designed forFull-body comfort
Zone coveredChest + back
Power50 W
Weight1.6 kg
Battery life3h30 (hot-swap)
SizesXS-S · M-L · XL-XXL

Both vests share the same patented technology (WO 2024/141723) and the same central button control.

Try Tramontana at your site

Monthly rental, annual rental, or purchase: three ways to get equipped, personalised quote within 48h.