This thing flows air beautifully, protects with a “AA+” abrasion rating, and would be our first choice for, say, tackling a summertime NEBDR mission.

Never have we seen a jacket that's at once so high-tech and (relatively speaking) low-key in its appearance (again, relatively). In the Monument Gray colorway especially, the toned down branding and muted color palette blends in with its surroundings—whether that's a trail or a cityscape.

To get right to the meat-and-potatoes here, the main chassis of the Baja jacket is made from tough and durable Schoeller-Dynatec nylon mesh, and in the especially high wear areas around the elbows and shoulders it's reinforced with Superfabric—a ceramic plating process that adds incredible abrasion resistance properties. The beauty of the Superfabric material is that it consists of a grid of tiny dots of the ceramic material—allowing air to flow between the super tough dragon scales.

At the non-critical areas the Klim uses liberal amounts of four-way stretch fabric, making this an extremely flexible and comfortable jacket to spend a day in. Underneath, a lightweight antimicrobial mesh liner helps wick sweat away and provide unrestricted airflow.

Note there are no discernible vents on this jacket. That's because the whole damn thing vents like a sieve. So much so, that it's only real weakness is that on cooler summer mornings this jacket might let in *too much* airflow.

We recommend pairing it with a packable rain layer. It pairs perfectly with Klim's Forecast Gore-Tex rain shell, or a Klim Stow Away Gore-Tex shell with operable vents.

Whether you're huffing through a technical singletrack hill climb or cruising through the city on a hot summer day, the Baja jacket delivers airflow in spades, and unlike many of the vented summer options out there, it's no slouch in the protection department, with a CE AA rating that's higher than most other mesh jackets in the class.

Fit note: These jackets run on the large side. If at all between sizes, go for the smaller size.

Shell/Construction

• Schoeller-Dynatec high tenacity nylon mesh main body/arms
• Comfort-mapped mesh chassis (shell & liner)
• Karbonite micromesh 4-way stretch 1000d Cordura in stretch zones
• Stretch woven material fully porous for airflow
• Superfabric on shoulders/elbows
• Designed to kit with enduro s4 jacket for cool/wet weather
• 3M Scotchlite C790 carbon black reflective material
• Durable 750d Cordura fabric for cargo pockets, cuffs, hem
• YKK zippers
• CE AA rating certified to PREN 17092-3

Armor System

• D3o CE level 1 LP1 vented shoulder/elbow pads
• D3o CE level 1 back pad
• Adjustable armor pad pockets
• Kidney belt compatible (sold separately)
• Klimatek cooling stretch mesh in armor pad pockets
• Engineered spacer mesh backpad pocket

Ventilation

• Full-time chassis ventilation through schoeller-dynatec mesh panels
• Air permeability through karbonite micromesh stretch zones
• Provides airflow at all speeds
• Collar tab back for increased airflow to upper chest

 Storage

• 6 external pockets
• 1 forearm emergency id stat card / hidden stash pocket
• 2 hand pockets
• 2 front cargo pockets
• 1 rear large cargo pocket
• 1 concealed document pocket behind backpad
• 2 lower internal zippered stash pockets partial mesh for airflow
• 1 upper inside chest drop pocket
• 2L hydrapak compatible pocket (hydrapak sold separately)
• 2 internal hydration hose routing options (over shoulder or under arm)

 Fit/comfort

• Comfort mapped mesh shell/liner for unrestricted airflow
• Moisture-wicking antimicrobial polygiene anti-odor liner
• Comfort collar liner material
• 2 quick-adjust forearm straps
• Adjustable bottom hem
• Adjustable velcro cuffs
• Jacket-pant zip connection