Matte One Piece Polycarbonate Construction. Tough Matte Finish Deters Scratching. Front Cover Remains Flush w/Rolling Cover. Low Profile Design. Opens/Closes Easily One Handed. Sealed Ball Bearing Roller Design. No Pull Straps/Velcro/Snaps/Springs. Clamp On Design. Key Lockable In Any Position. Secures Your Valuable Cargo. Unlimited Hauling Flexibility. Limited Lifetime Warranty.