Our story
Built for the muscle everyone sees.
ONYX Shreds makes one thing. It's a forearm trainer that keeps up as you get stronger, plus a simple plan to use it. We'd rather do one thing well than ten things okay.
Why forearms
Your shirt hides most of what you train.
Chest, back, biceps. Put on a T-shirt and most of it disappears. Your forearms don't. They're out every time you roll up your sleeves, shake a hand, grab the wheel or check your watch.
They're also the muscle most guys train last. Forearms get whatever time is left at the end of a workout, if they get any at all. So a lot of guys put in months at the gym, and in a regular shirt it barely shows.
What we heard
We read what guys actually say. And what women say, too.
Before we sold a single trainer, we went through Reddit threads and product reviews from guys who wanted bigger, stronger forearms. The same three things kept coming up.
Your wrist bones won't change. The muscle on top of them can. It just needs to be trained more often than most muscles.
Cheap grippers max out fast. Once it's easy, your forearms stop getting a reason to grow. Plenty of them break, too.
Most guys won't add another gym session. Five minutes on the couch is a different story.
And the women? Most said they don't want huge forearms. They like strong, defined ones in a rolled-up sleeve, on a guy who looks like he can get things done. That's a goal you can actually reach.
What we built around
So we went looking for a better trainer.
A straight handle
It works all four fingers evenly, so your pinky does its share.
Resistance that keeps climbing
Turn the dial as you get stronger. Start light, go heavy, all on one tool.
A built-in rep counter
It counts every squeeze, so you always know the number to beat.
A plan with every order
The free 30-Day Rolled-Sleeve Plan also trains the back of your forearm, the part a gripper alone misses.
What you can count on
Promises we can keep.
Honest results
Strength comes first, and shape comes with steady training. Everyone's different, so we'll never promise you new forearms in a week.
90 days to try it
Train with ONYX for 90 days. If you're not happy with it, email us and we'll refund your order.
Free US shipping
On every order, with a tracking link by email as soon as it ships.
Real people answer
Questions about your order or your training? Send us a message on our contact page and a real person will get back to you.
Ready when you are
Five minutes a day. No gym needed.
Get the ONYX Forearm Trainer, the free 30-Day Rolled-Sleeve Plan and 90 days to make sure it's for you.
Shop the Trainer