I am not a teenager but using this product from childhood age.This is very best quality among other study materials company because no defects I have ever seen in my life in these books and products.
I also prefer this because it has a very eco-friendly pages and made from recycled things.
Classmate also provides contribution by taking ₹1/- on each of their products and contribute this money on urban areas children qhich didn't have money or can't study because of some conditions.
This is one and only one ITC from india which is helping such a lot of deliquent children and hope we should buy these products so that we can contribute by one rupees.
Thank you friends for viewing my comment.
Have fun and stay healthy.