This brush is mosly black resin that has strips of upcycled denim in it, it is not sanded down very finely, as you then lose the grip that wet denin offers (ever tried to get a pair off after swimming in them?!?! Like normal denim it will fray over time improving grip even more, you can smooth out this brush yourself if you please, some 180 grit sanpaper is all you need. This partly thrifted brush weighs 95 grams, it stands 136 mm tall with a loft of 58 mm, the waist measures 23 mm. The brush is fitted with a 24 mm synthetic Silvertip knot.