CHOOSE THE COMFORTING 3504 BIG & TALL SERIES IF: You stand 6'1" or higher and weigh between 280 & 500 lbs. You need a wide, slightly contoured seat to put your seat at ease. You want a contoured neck roll that supports your head and neck while you recline. You think 12 different mechanisms that you adjust to optimize your comfort sounds like heaven. You're tired of squeezing yourself into cheap, poorly designed office chairs. Combining the mid-back with BodyBilt's most popular, moderately contoured seat, this intensive-use task chair provides exceptional lower back support for desktop tasks. Seat depth is easily changed between shifts with the seat slider bar, located at the front of the seat pan. For special needs, an array of optional features is offered to address almost every seated task from the office to industrial settings.