LEATT

Leatt ThermaFlow 6.0 MTB Jacket V26 2026: BLACK

SKU LE5026054691

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RidingMTB

High-warmth cold-weather jacket with built-in breathability for high-output rides. The ThermaFlow 6.0 Jacket traps heat while allowing moisture to escape, with an adjustable fit, helmet-compatible hood, and ClimbVent system for airflow. Reinforced panels, secure pockets, and reflective details make it practical for the coldest conditions.

Features

Regular fit with adjustable waist
Pre-shaped ergonomic sleeves with 4-way stretch
Ride Adaptive Hood (RAhD) with three-point adjustment, helmet magnet, stiffened peak, and full chin coverage
ClimbVent connector for front ventilation
Snug elastane cuffs to block cold air
Three functional pockets
Reflective prints and zipper pulls

Leatt jerseys, jackets and tops

Fit tip For a riding jersey most people take their chest size; if you prefer a looser fit over body armour, go up one size.

How to measure

Chest: wrap the tape around the fullest part of your chest, under the arms, keeping it level. Height: stand straight against a wall without shoes. Arm: from the bone at the back of your neck, over the shoulder and down to the wrist. Measure in cm and compare with the table. For a riding jersey most people take their chest size; if you prefer a looser fit over body armour, go up one size.

Find my size

Enter what you can measure; we'll match it to the table.

Size	Chest (cm)	Height (cm)	Arm (cm)
XS	91-96	162-168	62-63
S	96-102	168-172	63-64
M	102-106	172-178	64-65
L	106-112	178-182	65-66
XL	112-116	180-185	67-68
XXL	116-122	182-188	68-69
3XL	122-127	183-188	69-70
4XL	127-132	183-190	70-71
5XL	132-137	184-193	71-72

Size	Chest (cm)	Waist (cm)	Arm (cm)
XS	82-86	60-63	59-60
S	86-90	63-66	61-62
M	90-94	67-71	63-64
L	94-98	72-76	65-66
XL	98-102	77-81	67-68
XXL	102-104	81-84	67-68

Size	Chest (cm)	Height (cm)	Arm (cm)
XXS	66-69	100-110	46
XS	69-74	110-120	49
S	74-78	120-130	54
M	78-81	130-140	60
L	81-89	140-150	65
XL	89-92	150-160	70

Applies to Leatt jerseys, jackets, hoodies and T-shirts. Women's sizes are listed by chest and waist.

See all size guides

Fit tip For a riding jersey most people take their chest size; if you prefer a looser fit over body armour, go up one size.

How to measure

Chest: wrap the tape around the fullest part of your chest, under the arms, keeping it level. Height: stand straight against a wall without shoes. Arm: from the bone at the back of your neck, over the shoulder and down to the wrist. Measure in cm and compare with the table. For a riding jersey most people take their chest size; if you prefer a looser fit over body armour, go up one size.

Find my size

Enter what you can measure; we'll match it to the table.

Size	Chest (cm)	Height (cm)	Arm (cm)
XS	91-96	162-168	62-63
S	96-102	168-172	63-64
M	102-106	172-178	64-65
L	106-112	178-182	65-66
XL	112-116	180-185	67-68
XXL	116-122	182-188	68-69
3XL	122-127	183-188	69-70
4XL	127-132	183-190	70-71
5XL	132-137	184-193	71-72