Really nice paper.Purchased primarily for sketching with fountain pens,it is lovely and smooth: no feathering or bleedthrough.No ghosting with the fountain pens and almost zero ghosting with black markers: Pitt,Pigma,and even a Sharpie. At 100 gsm. it tolerates a light touch of watercolour for accent, although not for very wet media(SM/LT has an A4 watercolour paper for that:also good).Happy to have discovered this paper!