"Phobos" from the big and tall mesh office chairs is suited for intensive, 24-hour multi shift use and has a weight capacity of 300 lbs. It is stylishly designed in white with a massive five-legged base, comfortable wide seat, and breathable mesh back that provides excellent ventilation. This mesh chair offers many ergonomic features and is suitable for every office room, lecture, or conference hall.FEATURES:Adjustable ergonomic chair features that can encourage health and wellness in the workplace: tilt tension, chair tilt lock, seat height, seat depth, forward seat angle, back angle, arm height, waterfall seat edge, contoured cushions, width adjust. arms, center-tilt.COLORS & MATERIALS:This office chair 300 lb capacity is available with Light/Natural mesh back, white soft vinyl upholstery and a black frame.CERTIFICATIONS & WARRANTY:Greenguard Indoor Air Quality Certified: These big and tall mesh office chairs are in compliance with stringent emission guidelines set out by the Greenguard Environmental Institute. Our office furniture chairs are intended for a standard eight hour, single shift work day for users weighing up to 300 pounds, and are covered by a Limited Manufacturer''s Warranty.ASSEMBLED DIMENSIONS:Overall Dimensions: W25.5 x D24 x H39Weight Capacity: 300 lbs; Seat Size: 20''''W x 17-19.5''''D; Back Size: 18.5''''W x 21SHIPPING:You''ll receive your Big and Tall Office Chairs right at your doorstep via UPS/FEDEX Ground, with tracking provided. If you order 5 or more, we may need to ship the items differently (Curbside or Freight) and will contact you before shipment if we need to make special arrangements. Ordering 25 or more? Contact us ahead of time and we???ll be happy to confirm availability and make delivery arrangements (additional delivery costs or product discounts may apply).ASSEMBLY:Your Big and Tall Mesh Office Chairs will ship with illustrated instructions, making assembly manageable for relatively handy consumers. We recommend using 2 people, confirm you have all the parts and hardware before you begin, and do not throw away any packaging until you have completed the assembly. We suggest building on carpet or protected floors to avoid scratches. We???re also happy to provide assembly services ??? just contact us for pricing!