This deluxe standing desk bundle is the perfect way to get your ergonomic workstation started. It comes with a White DADR Sit to Stand Desk Riser and a MAFM Anti Fatigue Mat. The deluxe DADR Sit to Stand Desk is a newer, wider version of the classic ADR desk riser that lets you hold two or three monitors and/or a laptop. It gives you the best of both worlds. You can sit part of the day, as you always have, but you can also stand and take advantage of all the health benefits that come with standing and moving around. You, and your associates, will become healthier and more productive. Your DADR uses your current desk.no need to buy all new furniture. You can sit as you always do and then easily raise the large 37.5 x 20.5 desk and keyboard tray into 5 raised positions (up to 16.3 above your regular desk). This standing desk converter is perfect for an office workstation, a medical desk, a home office or a student desk. The DADR is a sit to stand workstation that offers a 29.5 wide x 11.75 deep retractable keyboard tray that allows you to get into the most comfortable ergonomic position and it is large enough to hold a laptop computer (with other risers you may have to move the laptop or the entire riser every time you change from sitting to standing). It also includes a grommet hole for a single (Rocelco DM1) or double (Rocelco DM2) monitor arm or to organize cables. The DADR Ergonomic workstation provides gas piston lift assist that allows you to easily raise up to 35lbs. Completely assembled and ready to go!The MAFM Anti-Fatigue Mat is designed to work in tandem with standing desk risers, like the Rocelco ADR, DADR, EADR, CADR and MSD series. It will help support your back, hips, knees and feet so you can get all the benefits of standing while you work. This versatile desk mat effectively reduces your weight by 30% to make standing easier on your feet and joints. The advanced multi-layer construction offers a comfortable leather like top surface, a memory foam inner layer and a non-slip bottom. A perfect 30 x 20 size provides plenty of room to move around, but still can fit into the kneehole of a standard desk or built-in when it is not being used. Beveled edges help to reduce tripping issues and commercial grade thickness provides hours of comfort and stability. The durable materials on this desk mat will not break down, even after years of use.