ERGONOMIC DESIGN 2 kinds of adjustable heights——the high angle increases by 8cm, so that you can straighten your spine when using the computer and relieve back pressure. Low angle increases by 5cm, long time typing farewell to sore wrists. BRAND NEW UPGRADED PRODUCT : Some customers said: “The big hinge is easy to pull out, but not the little ones, The little feet are stuck too tight ." So, we upgraded the product. Brand new upgraded product. The appearance and function of the product remain unchanged, and the bracket will look more refined. Using lighter materials, lighter weight, you will be more portable to carry your notebook. The lightweight material does not reduce the sturdiness of the bracket, but improves the sturdiness.The little feet of the bracket, in the open position, we made improvements. When opening the old product, there are cases where it cannot be opened easily with the hand. We made a user-friendly modification for the new bracket, you can easily open it by hand. In the product packaging, we provide you with an additional set of double-sided tape as a spare. Can be installed repeatedly without leaving traces With 3M double-sided adhesive, even if you remove it, no marks will remain on the surface of the laptop stand.If the adsorption force is weak, Please use clean water wash the double-sided adhesive surface to remove the dirt and restore the original adsorption force. SLIP STABILITY Creative portable collapsible portable laptop stand, easy to fold and unfold - you can set the work area in a few seconds. USES ALUMINUM ALLOY MATERIAL 100% Aluminum alloy material can absorb and discharge heat easily,The support structure is stable, the edges are smooth, and the rubber feet can prevent slipping and scratching to damage the desktop. EASY TO CARRY The lightweight design, made of high quality aluminum alloy.You can stick it on your laptop with a non-slip pad, so you'll never forget to take it out. Carry it with you.Suitable for business trips, trips and cafes. It can also be conveniently used at home.