It has nubs from the plastic at each corner of the design. Bought this as a replacement for my original Apple charger that came with my IPad and so far it charges faster than the other chargers I’ve bought from Amazon. Incredibly easy to place. But the touch and response of these Macally keyboards is excellent - I like the key action and tension. Love there earbuds! I am inclined to believe they are knock offs. I wish they were metal like the top large wall mounts. No wind sock so you here wind feedback. I was looking for some big sound and this guy delivers. I bought XL because I am a UK 7-8 which is 9-10 US.