⟲ 360° — drag meThe facts.
| Model | Leatt Boot ADV HydraDri 8.5 |
|---|---|
| Colour | Black/Grey |
| Category | Adventure boots, unisex |
| Membrane | HydraDri EVO, 20,000 mm / 20,000 g/m² |
| Upper | Nubuck leather, synthetic leather, TPU |
| Closure | SlideLock hook-and-loop closure, over-lock buckles with stainless-steel base |
| Protection | TPU ankle shell, 3DF impact foam, reinforced shin plate, flex limiter |
| Sole | ADV pattern, steel shank, PU foam midsole |
| Certification | CE, EN 13634:2017 |
| Weight | 5,300 g |
DescriptionThe whole story▼
The Leatt Boot ADV HydraDri 8.5 in Black/Grey is built for riders whose route keeps going after the tarmac stops. Leatt calls the 8.5 its ultimate offroad expedition boot, and the hardware backs that up: a stiff, offroad-inspired chassis, a TPU shell around the ankle and a HydraDri EVO membrane rated at 20,000 mm water column and 20,000 g/m² breathability.
This colourway pairs a black upper with light grey panels on the lower shell and foot, so the boot looks technical without shouting. It suits long adventure trips where a river crossing, a rocky climb and a rainy border pass can all happen on the same day.
Key Features
- HydraDri EVO membrane, waterproof and breathable at 20,000 mm / 20,000 g/m²
- Offroad-inspired stiff chassis with full enduro-level foot support, as Leatt describes it
- TPU shell and 3DF impact foam protecting the ankle area
- Impact-reinforced shin plate and shaped heel support
- One-way SlideLock hook-and-loop closure plus buckles with over-lock system and stainless-steel base
- Durable Nubuck leather upper
- ADV-pattern sole with steel shank reinforcement
- CE tested and certified to EN 13634:2017
Protection and certification
The 8.5 is CE tested and certified to EN 13634:2017, the European standard for protective motorcycle footwear. At the ankle, a TPU shell works together with 3DF impact foam, which Leatt uses to absorb energy from knocks against rocks or the bike. Up front, an impact-reinforced shin plate covers the lower leg, and a shaped heel support keeps the rear of the foot stable when you stand on the pegs for hours.
A flex limiter is also listed for this model. It controls how far the boot can bend and gives you more control when a foot slips off a peg on loose ground.
HydraDri EVO: dry feet on long days
Behind the leather sits Leatt's HydraDri EVO membrane. Rated at 20,000 mm waterproofing and 20,000 g/m² breathability, it keeps puddles and rain outside while moisture from your feet can escape. That combination is what turns the 8.5 into an all-weather boot rather than a fair-weather choice.
Closure and handling
The top of the shaft is sealed by the SlideLock system, a one-way hook-and-loop closure that locks itself as it slides. Below it, buckles with an over-lock system and a stainless-steel base hold the boot shut. The over-lock is meant to stop a buckle from popping open when it brushes a branch or a boulder.
Chassis, sole and bike feel
The 8.5 keeps a stiff, offroad-inspired construction for stability on rough tracks. The inner side is flat and fitted with a protective, grippy rubber and microfiber panel so you can squeeze the bike with your legs. A shaped toe box makes gear changes easier, and the ADV-pattern sole with steel shank reinforcement grips on footpegs as well as on muddy ground when you have to push. A PU foam midsole damps vibration on long stages.
What you should know
The 8.5 is the heavy-duty option: Leatt lists a weight of 5,300 g, and the stiff chassis is set up for standing and rough terrain. If you mainly ride tarmac and walk a lot at stops, a shorter ADV boot may suit you better. The membrane keeps water out up to the top edge of the shaft, but it cannot help once water runs in from above, so wear trousers that reach over the boot. Nubuck leather keeps its look longer when it is cleaned and treated regularly.
Colour
Black/Grey uses a black shaft and shin area with light grey panels on the lower shell and around the foot. The grey breaks up the silhouette and makes the "8.5" lettering at the toe stand out. Light grey shows dust and dried mud more readily than plain black, but it comes clean quickly with water and a soft brush.
Size guide
| EU | US | UK | Foot length (cm) |
|---|---|---|---|
| 38 | 5 | – | – |
| 39 | 6 | – | – |
| 40.5 | 7 | – | – |
| 42 | 8 | 7 | 26.5 |
| 43 | 9 | 8 | 27.5 |
| 44.5 | 10 | 9 | 29 |
| 45.5 | 11 | 10 | 29.5 |
| 47 | 12 | – | – |
| 48 | 13 | – | – |
Specifications
| Model | Leatt Boot ADV HydraDri 8.5 |
| Colour | Black/Grey |
| Category | Adventure boots, unisex |
| Membrane | HydraDri EVO, 20,000 mm / 20,000 g/m² |
| Upper | Nubuck leather, synthetic leather, TPU |
| Closure | SlideLock hook-and-loop closure, over-lock buckles with stainless-steel base |
| Protection | TPU ankle shell, 3DF impact foam, reinforced shin plate, flex limiter |
| Sole | ADV pattern, steel shank, PU foam midsole |
| Certification | CE, EN 13634:2017 |
| Weight | 5,300 g |
What's includedEverything in the box▼
- 1x pair of boots
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
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