Tribesigns Height Adjustable Standing Desk - Home Office Computer Laptop Sit Stand Desk Converter, Black Height adjustable Sit /Stand desk conversion,transforms any sit-down desk into either a sitting or standing desk Super sturdy & stable even when fully extended - support with four solid guide rail and free auxiliary support bar, hold up to 25 lbs per level Two-tier design - upper display surface, lower keyboard/mouse deck , space saving perfect for small offices Easy assemble, your new adjustable computer or monitor stand can easily be set up in under 15 minutes, all tool included. Combates Your Sedentary Lifestyle - Scientists have found that incorporating more standing, pacing and other forms of activity into your lifestyle can have positive health benefits for your body. Take a stand for your health and start standing at work tody!