M’s Pinnacle 3L Rain Pant

UTMB® and most other ultras require waterproof protection above 10K in their emergency weather kits. All of Janji’s waterproof layers exceed this, and we third-party test our fabrics to ensure they meet a real-world 20K rating.

In 2023 we switched from C6 DWR to PFAS-free C0 DWR, which affects how long a fabric sheds water. Janji made the move to stop adding intentional PFAS across our entire product line years ahead of many of our peers and before it was mandatory via regulation, because we simply believe it's the best decision for people and the planet. We mention this however, because we have seen a drop in waterproof protection. The same exact waterproof fabric with C6 DWR vs C0 DWR will have different waterproof ratings. 

For our Pinnacle 3L, we wanted this kit to be as light and packable as possible while maintaining a 20K waterproof rating. We field tested and lab tested lighter, more breathable waterproof fabrics, but they failed our waterproof benchmark. We found the <60gsm options wet out far too quickly. In balancing durable waterproof protection, with exceptional breathability and packability, we landed on our ultralight 71gsm fabric that keeps you comfortable for multiple hours in a downpour. With any waterproof fabric this light, do note that saturation is a matter of when, not if.

They’re a straight-leg cut and have enough room to layer over your tights or shorts without feeling bunched up. Articulated construction around the knee lets you bend and stride naturally. The men’s inseam is 30.7in/78cm. The ankle zips open wide enough to get the pants on or off without taking your shoes off.

These rain pants have one internal, back hanging mesh pocket to stow the pants in. When designing these layers as ultralight, packable rain protection to deploy quickly we realized a couple things. One: almost under no circumstance would someone use this kit without a vest or pack and base tights or shorts. Two: Janji’s existing gear is far better suited to carrying things, more bounceproof, more comfortable, than an ultralight rain shell. We designed this kit all around easily accessing those underneath base layers and pockets*, rather than carrying things on their own. 

*Tight zips align with Janji’s M’s Trail Tight, M’s Trail Half Tights, W’s ⅞ Trail Tight, W’s Flux Tight, W’s Pace Shorts, M’s Boreal Fleece Tight, W’s Aurora Fleece Tight. 

3L fabrics are constructed with:

• An outer later, or face fabric, that’s a durable material like a nylon or polyester, meant to protect against abrasion or ripping.
• A middle layer, the waterproof membrane, like a GORE-TEX or Pertex® that’s laminated to the outer layer. It allows sweat to escape, but prevents rain or wind from getting in. 
• An inner layer, which is a softer fabric like tricot backing or a type of mesh, bonded directly to the waterproof membrane to protect it and maintain breathability.  

2.5L fabrics have a very similar construction, but the main difference is in the inner layer. In 2.5L fabrics, the inner layer is a half fabric: a thin protective coating or print rather than a full fabric lining. 2.5L fabrics can be lighter, but are less durable over time, as well as less waterproof and less breathable. The half layer print on the interior doesn’t manage moisture as well as the full tricot layer of a 3L. 

Having 2-way zipper heads means you can open the zip from either the top or bottom. We tested this with a variety of tights and shorts to make sure access was easy. Fully open, these upper and ankle zips function like air intake vents for maximum airflow.