Red Monkey utilizes a softer silicone compound and a more advanced extrusion process than other silicone-based grips.  This creates a dual density grip. The denser inside layer vibrates with the bar while the outer, more porous layer, vibrates with your hand, lending to a high vibration damping grip.  This process is also designed to give the grip a tacky texture so they can be used with or without gloves and mitigates slippage. The grips are also designed to absorb some moisture due to the more porous and lower density of the grip. They naturally have moisture absorption properties that pull some moisture into the grip. Other silicone-based grips use a hi-density silicone that doesn't allow for this.