Hey Guys/Gals, I'm going through a little exercise of my own looking for the right overgrip/replacement grip combination and I thought I'd pass on some observations... Overgrip/Replacement Grip THICKNESS Measurements Yonex Super Grap Overgrip - 0.020" (says 0.6mm or 0.024" on the package) Tourna Grip II Overgrip - 0.020" Babolat 'Natural' Leather Replacement Grip - 0.065" Laserfibre Twintone Replacement Grip - 0.051" Prince DuraPro+ Replacement Grip - 0.064" Gamma Supreme Overgrip - 0.022" All grips were measured fresh out of the wrapper with a calibrated Vernier caliper. Since these products are soft and give a little I took a few measurements along the grip and calculated an average. You can also expect a difference in thickness from one manufacturing lot to another so YMMV. Too bad TW stopped carrying their leather wraps!! I think the 1.3 would be perfect for what I'm looking for. Hope this proves to be useful to someone!