Black Diamond Heavy Duty Chair Mats - Rigid Polymer-Rectangle-Patterns

Black Diamond Chair Mats for Hard Floors and Carpeting.

• Twice the thickness of most other brands, holds up to constant everyday use outlasting vinyl, polycarbonate, acrylic and PVC floor mats ten to one.
• Works on hard floors (wood, tile, etc), as well as all thickness of carpeted floors.
• Will not indent under chair caster pressure. 
• Rigid hard surface material. 
• This mat does not roll up; it ships flat and is a solid non-bendable design that simulates a hard floor surface.
• A textured top surface & ramped edge is included for easy chair movement.
• 5 year warranty against cracking / chipping.