With high-density foam for the seating and back, suitable seating, competitive price, quality guarantee. 1)Commercial office chair with non-synchro mechanism, two armrests PC-23 & PC-28B for choice;2)Fabric color diversity for choice as you like(yellow,grey,black)3)Gas-lift chair, can be up and down, PP base. office chair/office furniture/chair(D631-22A-28)