Large venues buy chair covers by the crate, and this 150 piece box outfits a ballroom, a conference plenary or a wedding of 150 guests in one delivery. Every cover is cut from polyester spandex knit for flat front chairs up to 17.72 by 18.11 by 30.31 inches, so a hall running a single chair model gets an identical fit down the last row. Foot pockets at the corners anchor each hem and reinforced seams take the repeated pulling that comes with high volume setup and teardown. Buying at this quantity also keeps a spare stock on the shelf when a few covers are in the wash. Packed weight is 45.42 pounds, so the carton is best moved on a cart or split between two people. Machine wash on a gentle cycle with mild detergent, hand wash or dry clean, then air dry and fold flat into bins for the next booking.