children's coloring book material: cover,back is 300gsm triplex paper with white back,inside is 70gsm woodfree size:27.8*21.0c We can produce Coloring book with various fashion designs, strong adhesive, high quality but competitive price1) Name: children's coloring book 2) Material: cover,back is 300gsm triplex paper with white back,inside is 80gsm woodfree, there are two sheets of 4c sticker ...