Kick your worn-out standard office chairs to the curb. Nucleus replaces outdated seating to keep you comfortable at work with an internal seat structure that’s formed by mesh. This task chair is available with either an upholstered or mesh back that flexes four ways to put instant lumbar support right where you need it.Trial chair features:Height and Width adjustable armsHard castersBlack mesh backCenturian fabric seatStandard baseBlack frame