Klim Baja S4 Jacket Designed for the thrill of adventure in the world's most extreme environments, the Baja S4 Jacket combines breathability with protection. Featuring a construction of durable mesh and 4-way stretch panels, it promotes airflow and movement, ideal for hot weather riding. Enhanced with ceramic-plated SuperFabric for superior protection, the Baja S4 Jacket, when paired with a waterproof shell, transforms into the ultimate all-weather adventure gear. Construction: The latest iteration of Klim's premium hot weather ADV jacket S4 Four-way stretch Max airflow is met with slight revisions to design, fit, and reflective scheme over its predecessor (the Baja S4 from 2020) Schoeller-dynatec high tenacity mesh main body/arms Comfort-mapped mesh chassis for durability, stretch in key locations Durable Karbonite micromesh 4-way heavy stretch 1000D Cordura in pockets, armpit gussets, waist and cuffs Stretch mesh comfort liner in arms and elbow pad pockets Durable 750D Cordura fabric for collar, cuffs and hem SuperFabric on shoulders/elbows DWR treatment sheds water 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 Protection & Safety: D3O CE Level 1 Elbow, Shoulder and Back protection Removable armor pads Kidney belt compatible (sold separately) Stretch mesh in elbow armor pad pockets Engineered spacer mesh back pad pocket 3M Scotchlite Carbon Black Reflective Material for visibility CE Class AA garment certified to EN 17092-3 Comfort: Comfort mapped mesh shell for unrestricted airflow Moisture-wicking antimicrobial anti-odor liner Comfort collar liner material Micromesh 4-way stretch gusset to stretch over gloves 2 quick-adjust forearm straps Adjustable bottom hem Adjustable Velcro brand closures at cuffs Jacket-to-pant long connection zipper YKK Zippers Pockets: 1 forearm emergency ID stat card / hidden stash pocket 2 zippered hand pockets 1 rear large zippered pocket 1 concealed document pocket behind backpad 2 lower internal zippered stash mesh pockets 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)