Premium Memory Foam with Cooling Gel Cushion -- The inner core of office chair armrests is made of pure memory foam with moderate hardness which provides comfortable feeling with a soft touch. The memory foam cushion features a cooling gel insert on top to maximize comfort by keeping you cool and absorbing body heat. Arc Contoured Design -- We have designed the gaming chair armrest pillow with a unique arc shape that better fits your wrist, arm and elbow with extra support and comfort. The armrest cushion acts as a riser for office chairs, gaming chairs, desk chairs and wheelchairs by increasing the height of the chair arms. Breathable mesh cover Removable & Removable -- In addition to the cooling gel cushion, our armrest cushions come with breathable mesh covers to release heat. Velcro strips and non-slip particles at the bottom allow the chair pads to be firmly installed on the chairs. Concealed zipper makes the mesh cover detachable for easy cleaning and machine washing. Thickening and widening design fits a variety of chairs- Armrest cushions measure 9.8 (L) x 4 (W) x 2.7 (H) inches and fits most chair arms between 3 and 6 inches in width. Our chair arm cushions are thick and widened with which you can get extra support and comfort. It fits a variety of office chairs, gaming chairs, dining chairs, and wheelchairs.