Limbsaver Insulator Strip 2 Pack Black. Its made from LimbSavers proprietary NAVCOM technology (Noise and Vibration Control Material) which effectively absorbs a wide range of frequencies to dissipate energy and vibration. Specifications for Limbsaver Insulator Strip: Manufacturer: Limbsaver Size: 3.5 x 0.5 in Color: Black Fabric/Material: NAVCOM Quantity: 2 Pack Features of Limbsaver Bow Insulator Strip Insulates your hand from cold while handling a bow Attaches on the front of your bow's grip directly to riser Measures 3-1/2 x 0.5 inches (LxW) Won't increase your grip width Comes as a pair Package Contents: Limbsaver Insulator Strip Limbsaver 3410: Insulator Strip 2 Pack Black