01Flat sides you can feel.
The FLAT1 rectangular profile gives your hands a clear reference for the putter face. Compare how its broad sides sit in your palms before choosing your size.










FLAT CAT / GRIP ROOM
A rectangular FLAT1 profile puts parallel flat sides in your hands. Choose from all five Original sizes: Slim, Svelte, Standard, Fat and Big Boy.
The details that shape your grip
01The FLAT1 rectangular profile gives your hands a clear reference for the putter face. Compare how its broad sides sit in your palms before choosing your size.
02The polyurethane body has a light surface pattern for a comfortable hold. At the shaft end, the Easy-Glide cone is shaped to ease the grip out of your bag.
03FLAT CAT shows parallel flat sides for traditional or left-hand-low holds, and perpendicular sides for claw, open-hand or pencil holds. Test your setup with your installer before fitting.
Manufacturer photography and orientation guide: FLAT CAT. Standard is pictured in the product detail photos.
02 / Specifications
Manufacturer reference specifications. Choose your size and color in the product options above.
Manufacturer details| Size | Nominal weight |
|---|---|
| Slim | 40 g |
| Svelte | 50 g |
| Standard | 60 g |
| Fat | 80 g |
| Big Boy | 100 g |
Compare the five Original profiles and manufacturer nominal weights. Choose the size that feels comfortable with your normal putting hold.
Weights are manufacturer nominal values and can vary. Confirm shaft fit and installation with your fitter.
03 / Find your feel
Try each profile with your normal putting hold. Slim is the smallest option for a thinner-grip feel. Svelte combines a narrow width with larger flat sides. Standard is the middle size. Fat adds a fuller profile and more flat-side contact, while Big Boy is the largest. Compare nominal weights with your existing grip and discuss putter balance and installation with your fitter.
Back to optionsTry the shape and size with your usual putting hold. The paddle, back shape and diameter change how each hand contacts the grip. Choose the combination you find most comfortable; swing-grip hand-size measurements do not prescribe a putter grip size.
For woods & irons: grip calculatorFLAT CAT illustrates two setups: parallel to the putter face for traditional or left-hand-low styles, and perpendicular for claw, open-hand or pencil styles. Confirm your preferred orientation before installation.