The mushroom texture gets its title by looking like the classic fins on the underside of a mushroom. This is important so that the fin can be compressed by the hand and flex into the space next to it.
Peatys Monarch Lock on Grips - Mushroom - Thin
Peatys Monarch Lock on Grips - Knurl - Thick
Peatys Monarch Lock on Grips - Knurl - Thin
Peatys Monarch Grips - Knurl - Thick
Peaty's Peatys Monarch Grips
FIFTY-FIFTY Mountain Bike Handlebar Grips, Single Lock-on MTB Grips, Comfortable and Lock On, Non-Slip Bicycle Handle, Fit for All Mountain, Enduro, Downhill (Black)