Specialized's Enduro Grips feature multiple densities of rubber for vibration damping and comfort. Outside there's softer rubber and a textured pattern for a non-slip grip, while the inner cores sport harder rubber, which keeps the grips in place on the handlebars.
Although cheap in price compared to Ergon MP1 grips(Enduro) they are far worse. If you are planning on riding alot, especially rooty trails, I'd suggest staying away from these grips unless you have top of the line gel gloves(full hand).
Bottom LineNo, I would not recommend this to a friend