Lattice – Heavy Roller – Wrist & Forearm Strength Trainer

The Heavy Roller from Lattice Training is a wrist-focused strength tool engineered to isolate the forearm flexors and extensors using an offset-loading mechanism. By gripping the 60 mm cylinder and resisting the rotation generated by the wrapped cord, you train the exact wrist and forearm muscles needed for slopers, pinch stability and injury-resistant climbing strength—without loading the fingers.

Forearm Strength Without Finger Strain

Traditional hangboarding overloads finger tendons. The Heavy Roller distributes force into the palm and wrist, letting you train the forearm safely and aggressively—even during skin fatigue or finger rehab.

Sloper Strength, Off the Wall

Slopers require wrist torque control and open-hand tension. The Heavy Roller targets these same muscles with friction-controlled rotation, letting you build sloper strength while saving your skin.

Flexors, Extensors & Stability

Depending on whether you resist rotation inward or outward, you train:

• Wrist flexors (curling in)

• Wrist extensors (curling out)
  The offset load also forces the smaller stabiliser muscles to work—just like free-weight training—improving coordination and control.

Injury Prevention & Tendon Rehab

The device supports controlled, progressive loading for managing:

• Wrist tendonitis

• Golfer’s / tennis elbow

• Post-injury wrist strength rebuilding
  Its predictable mechanics make it ideal for structured rehab protocols.

Comfortable 60 mm Grip Diameter

Research from Lattice shows 60 mm is the optimal size for wrist curls—no awkward barbells, no wrist tweaks.
The high-friction powder-coated finish stays secure, even when sweaty, and is gentle on skin.

Load Adjustment Made Simple

Pair with the Lattice Lifting Pin and Fractional Plates to fine-tune load in small increments—perfect for progressive overload and consistent strength training.

Specifications

• Weight: 0.6 kg

• Grip diameter: 60 mm (2.4")

• Material: Powder-coated steel cylinder

• Mechanism: Offset loading via wrapped cord

• Country of Origin: CN