Staples Tyvek EasyClose Catalog Envelopes, 9"L x 12"H, White with Green Diamond Border, 100 Box Safety 8 Base Material: Nylon Brand True Color:Ebony Wood Grain 8 Base Material: Nylon Brand Name: Tempur Pedic Chair Base Type: Casters Chair Center Tilt: No Chair Lumbar Support: Adjustable Chair Synchro Tilt: Yes Chair Type: Computer and Desk Color Family: Black Depth in Inches: 28 Furnishing Material: Fabric Height in Inches: 46 Maximum Seat Height (Inches): 19 Maximum Weight Capacity (Lbs): 500 Minimum Seat Height (Inches): 16 Office Chair Back Material: Plastic Office Chair Caster Usage: Hard Floor Recline: Recline Seat Depth (Inches): 21 Seat Glide: Yes Seat Material: Fabric Seat Width (Inches): 26 Series or Collection: Big & Tall Swivel: No Swivel True Color: Staccato Black Type of Big & Tall Chair: Computer & Desk Warranty Information: 3 Year Weight (lbs Brand Name: Staples Color Family: White Envelope Closure: Self Seal Envelope Flap Style: Square Envelope Material: Tyvek Envelope Number: Nonstandard Envelope Pack Size: 100 Per Pack Envelope Size: 9" x 12" Envelope Type: Catalog Envelope Window Location: None Height in Inches: 12 Next Day Delivery: Yes Pack Qty: 100 Paper Weight in Pounds: 14 Security Tint: Untinted Series or Collection: EasyClose True Color: White with green diamond border Width in Inches: 9 Each one has a green diamond border to identify mail as first class