Why FLX?
Every detail in this short exists to get out of your way. The scalloped cut stays clear through squats, cleans, and box jumps. A lightweight 4-way stretch shell moves without pulling, while the built-in liner adds support and coverage underneath.
We didn’t design this for Instagram. We designed it for training.
Two inseams. Eight colorways. One standard.
LIGHTWEIGHT 4-WAY STRETCH SHELL
90% Nylon / 10% Spandex · 140 GSM
Built to move freely through lifting, conditioning, and running.
MOISTURE-WICKING + QUICK-DRY
Performance shell fabric engineered to manage moisture and dry quickly through hard training.
BUILT-IN LINER
90% Polyester / 10% Spandex · 170 GSM
A more substantial inner layer for support and coverage.
PERFORATED REAR PANEL
Strategically placed perforations through the back of the shell.
SECURE STORAGE
Two deep front pockets + a rear zip pocket for secure storage without bulky side zippers.
SCALLOPED CUT
Designed to stay clear of the leg through squats, pulls, jumps, and runs.
5” + 7” INSEAMS
Same FLX construction. Two lengths. Choose the coverage you prefer.
What Happens When You Train In Them
The Standard Lives Here.
Every entry in Field Notes is written from the floor — about training, discipline, and what it actually takes to hold the standard when no one's watching. If you train like it matters, this is for you.
FAQs
The 5” hits around mid-thigh for a shorter training cut. The 7” hits just above the knee for more coverage. Both use the same FLX construction and are designed to stay out of your way while you train. Choose the length you prefer.
Runs true to size. If you're between sizes or train in a bigger build, size up. Available S through XXL. Check the size chart above the Add to Cart button.
The FLX uses a lightweight 140 GSM shell made from 90% Nylon / 10% Spandex. It has 4-way stretch, moisture-wicking performance, and quick-dry properties built for training across strength work, conditioning, and running.
Inside, a 170 GSM liner made from 90% Polyester / 10% Spandex provides a more substantial layer for support and coverage without weighing down the outer short.
We've had customers training in these for two-plus years without degradation. The scallop cut holds, the pockets hold, the fabric holds. That's the point. Buy it once, train in it for years
