THE RUNNING VEST PROBLEM NOBODY TALKS ABOUT
You spent $150 on a vest. Every review said it didn't chafe. Here's what those reviews missed — and how to actually f...
// Field Dispatches · 6 Posts
Smooth
AF.
Field notes, protocols, and dispatches from the underground. Built for athletes who run long, ride hard, and refuse to stop because of friction.
6
Field Reports
RX
Friction Prescription
// Featured Field Report
100 mileWorthy. Callie's First 100
FRXN // Smooth AF // 1.4 Worthy. Callie Lance, the Chief LaDiga 100, and the friction that actually matters. Subject: Dr. Callie Lance // Race: Chief LaDiga 100 // Status: ...
// All Field Reports
FRXN
The Best Anti-Chafe Balm for Ultramarathons
Most anti-chafe products were designed for marathons. They fail at mile 40. This is the honest breakdown — what works...
Why You Chafe Worse After Hour Four
Why does chafing get so much worse in the back half of a long run? It's not bad luck — it's moisture physics and salt...
FRXN
The Physics of the "Chub Rub": Why Your Willpower Isn't the Problem (And How to Fix It)
Chafing isn't a willpower problem—it's the Second Law of Thermodynamics. Learn why movement creates friction, why com...
The Weight of the Work: How to Prevent Chafing and Blisters While Rucking
Rucking under heavy load creates aggressive gear-on-skin friction. Learn exactly how to protect your shoulders, hips,...