This book is ideal for use in labs and chemistry classes. The smooth 20 lb white writing paper is printed with a graph layout. Pages are not numbered. Covers are made from durable black laminate. The book is center sewn and tape bound for durability. Designed for permanent notes. Pocket-Sized Indicator: No; Book-Binding Type: Sewn; Taped; Book-Binding Edge: Side; Cover Color: Black.