Supersafe Stockbooks are like no other stockbooks in the world. I've been in the stamp album business for over 20 years and have never been so impressed with a stockbook... Believe me, I've tried them all! Whether they are from Germany, Japan, or anywhere else in the world, every stockbook with glassine strips I have ever seen has strips with razor sharp edges. I learned how treacherous sharp strips are when I tore some perfs on my mint Zepp... Some painful and costly lesson. Our White paged Supersafe stockbooks are different. Each glassine strip is 'machine rounded'. No more razor-sharp strips that can damage stamps as you insert them.