1[Adjustable Design] Laptop riser, can raise your laptop screen to achieve a perfect sight level, help reduce neck and shoulder pain, back pain and eye fatigue, and promote correct sitting posture. 2[Aluminum Alloy Structure] Z shaped design, sturdy and durable, provide good stability for the bracket; non slip design, can ensure that your laptop is fixed in place. 3[Widely Used] Compatible with all 1017in laptops, for MacBook, for MacBook Pro, for MacBook 12 13, for MacBook Air 13, for MacBook Pro 13 15 (2020, 2019, 2018), for Powerbook, for ASUS, for Sony, for Dell, for Toshiba, for Lenovo, etc. 4[Bottom Storage Groove] It can hold accessories such as mobile phones, USB, wireless mice, pens, erasers, staplers, etc., suitable for offices, meeting rooms, coffee and other occasion. 5[Ergonomics] With heat dissipation holes, good heat dissipation performance, which can increase the airflow to the notebook computer, dissipate heat and prevent the computer from overheating.