This refills paper features 7 x 9.25 Inch, double side clear black lines, each pack 100 sheets / 200 pages of high quality 100gsm white paper. 100% recycled smooth white paper for easy writing, great for a range of markers and mediums. Heavy-weight, acid-free filler paper that won't bleed through. It responds well to fountain pen, gel pen, roller pen, ballpoint pen, highlighter, pencil and etc. Standard 9 disc design refill paper works perfectly for Happy Planner.Loose-leaf refillable planner inserts works perfectly with binder notebook planner, meeting record, class notes, travel diary, poem writing, doodles, project notebook for work, home or school.