The Arenberg Gel 2 gloves from Castelli are designed for... to soften the blows in the harsh 5-star cobble sector through the infamous Arenberg forest during Roubaix. The glove features a Castelli Damping System gel pad to soften impacts and, together with a silicone grip, provides control and comfort.. The back of the gloves uses micro mesh so your hands stay cool and the easily adjustable Velcro closure makes it easy to find a fit. The final detail of the gloves is the microsuede nose pad on the thumb. , making cleaning easier.