Usage Tips:Adjustable ArmrestsMade of durable ABS cardboard with padded memory foam on the surface for extra comfort. Dimensions 14 x 29 cm. ERGONOMIC DESIGNUnique ergonomic design, you can now move freely. Suitable for right-handed or left-handed users, the attached ball is 180 adjustable, making it easy to use at home or in the office. You can play or work in comfort for hours. Comfortable and ComfortableThe weight of the forearm is distributed in a large local area, reducing the constant pressure on the wrist, eliminating the pressure on the neck, arm and shoulder muscles, bringing you a comfortable desktop experience. Easy InstallationQuick installation without assembly tools. 180 adjustable armrest for left- or right-handed users. NoteTable thickness: no more than 6cm/2.36''. If the edge of the table is sloping or decorated, it is not compatible with this wrist rest support mouse pad.