SKYZONAL Home Office Computer Arm Rest Chair Armrest Mouse Pad Mat Wrist Support Black (Please Measure Chair arm Rest Size and Confirm Our Straps Size Before Ordering) Description Features: Note: For chair use only!!! The straps only suit for the chair arm rest with circumference range: 4.72''-7.45''.Please to measure if it suit for your chair before purchase. Easy assembly, no tools necessary. Perfect Arm Support While Working on Your Computer At Home or Work. Keep correct posture, avoid cervical vertebrae ache, mouse hand & nearsightedness SkyzonalTM is a US registered trademark protected by the US Trademark Law. Product Details: Brand: SKYZONAL Color: Black Material: Acrylonitrile Butadiene Styrene Product Dimensions: 17.72"L x 7.09"W Size: Medium Manufacturer: ‎Skyzonal Brand: ‎SKYZONAL Item Weight: ‎11.4 ounces Product Dimensions: ‎18 x 7 x 5 inches Item model number: ‎8541651010 Is Discontinued By Manufacturer: ‎No Color: ‎Black Material Type: ‎Acrylonitrile Butadiene Styrene Size: ‎Medium Manufacturer Part Number: ‎SV1W Date First Available: December 20, 2015