JumboMax JumboFlat 17 Standard putter grip White/Black/Silver, Oversize ArmLock 1.6-inch 130 g

Designed for golfers who favor the ArmLock technique, the JumboFlat 17 combines a broad, flat profile with a tapered contour to sit against the forearm and reduce wrist action. The grip’s 1.6-inch diameter and 130-gram mass give it a solid, planted feel, while the Poly-Tour outer layer provides tacky texture for improved contact and control. It has been used at the professional level and is tailored for players seeking steadier alignment and gentler grip pressure.

How does the JumboFlat 17 help stabilize my putting stroke?

The flat, wide surface is engineered to sit along your forearm so the upper arm and putter move as a single unit. That reduces wrist break and excessive hand rotation during the stroke, promoting a pendulum-style motion and more repeatable strikes.

• Super-wide flat face conforms to the forearm for consistent contact.
• Patent-pending tapered shape helps lock the putter to your arm.
• Heavier 130 g mass adds inertia for smoother pendulum movement.
• Oversize diameter lets you hold the club with lighter pressure.

Will this grip fit my putter and my hands?

The JumboFlat 17 fits standard putter shafts and is intended for players who prefer an oversized feel. Its 1.6-inch diameter and rounded back shape accommodate a variety of finger positions and hand sizes while providing a comfortable interface.

• Standard slip-on installation for most putter shafts.
• 1.6-inch diameter suits larger-hand players or those wanting less pressure.
• Rounded backside designed to fit fingers naturally.
• Available in a white/black/silver colorway that pairs with many head finishes.

What is the surface material like and how does it affect feel?

The outer layer uses a Poly-Tour compound that balances tack and texture without being overly sticky. That tacky surface improves contact confidence, while the underlying shape and weight contribute to a locked-in sensation between your hands, forearm, and putter.

• Poly-Tour exterior for reliable tack and soft texture.
• Textured finish gives grip in damp or warm conditions.
• Combination of material and mass enhances feedback on roll.
• Durable construction meant for regular round-to-round use.

How do professionals use this style of grip in tournament play?

ArmLock-style grips like the JumboFlat 17 have been adopted by top players to create a stable anchor point and reduce hand manipulation. When set against the forearm, the oversized grip supports a controlled stroke that many pros rely on for consistency under pressure.

• Used in elite competition by players who prefer a forearm anchor.
• Helps maintain alignment and stroke repeatability on long and short putts.
• Gives a different feel than standard pistol or pistol-mid grips for those transitioning to ArmLock.
• Suitable for practice and tournament settings.

Who is this for: The JumboMax JumboFlat 17 is aimed at golfers who use or want to try the ArmLock putting method, players looking to minimize wrist action, and anyone who prefers a larger, more stable grip. It suits recreational golfers, competitive amateurs, and touring pros who value a flat forearm interface, tacky feel, and added weight to promote a smoother, more consistent putting stroke.