Create Instant Active Standing - VIVO’s desk riser provides on-demand standing throughout the day for the freedom to get out of your chair and relieve muscle tension, reduce stress, and increase productivity. --Patented-- Spacious 91cm Surface - The 91cm x 56cm desktop provides room for single and dual monitor/laptop setups. The 64cm x 27cm keyboard tray raises in sync with the top surface to create a comfortable workstation. Strong 15kg Lift Assist - Go from sitting to standing in one smooth motion with dual pneumatic spring force. Adjust to your proper comfort level by using the innovative simple touch height locking mechanism (Adjustment Range: 17cm to 43cm). Very Minimal Assembly - This riser is almost ready to go right out of the box! Place on your existing desk, attach the keyboard & feet, and start organizing your workstation. We've Got You Covered - Our steel riser design is backed with a 3-year Manufacturer Warranty and friendly tech support to help with any questions or concerns.