The two sizes for the Pablo Link Desk Lamp have two different reaches:
Small, which has a max reach of 26.5"
Medium, which has a max reach of 36"
The small size has no pivot point dividing the arms and is more compact, where the medium size has a much greater range of motion, so your lamp size would depend upon how much of your desktop you want to illuminate and where you're going to position the lamp.
Answered on 12/28/2015 by Karen G. from Smart Furniture