Outdoor gear brand Merrell to sponsor Tough Mudder obstacle event starting 2016 - New York Business Journal
Amazon.com : COPOZZ Knee Pads for Men and Women, Knees Protective Brace for Sport, Volleyball, Work, House Cleaning with Thick Soft Foam Padding(1 Pair, Small) : Sports & Outdoors
TOUGHBUILT GelFit Black Non-Marring Knee Pads with removable Non-Marring SnapShell TB-KP-G203 - The Home Depot
What are the best shoes to wear for a Tough Mudder race? I've heard some can get sucked into mud and you need to wear shoes with enough cushioning. - Quora
How to prepare for your first Tough Mudder — Ian J. Mehr
5 Best Tough Mudder Knee Pads (Mud Runs/Spartan Races)
Mud runs: Dirty, challenging, next-level fun - Harvard Health
TOUGHBUILT GelFit Black Rocker Knee Pads with removeable and durable Rocker SnapShells TB-KP-G201 - The Home Depot
Gear Review: McDavid's TEFLX Arm & Leg Pads | Mud Run, OCR, Obstacle Course Race & Ninja Warrior Guide