These plastic sleeves are resealable and are made for storing standard CD jewel cases to protect them from shelf wear, dust and other damage. They also work with digipaks (if they have similar dimensions to CD jewel cases) and PS1 (Sony PlayStation One) game cases. Adhesive strip is covered with plastic and is located on the sleeve, not on the flap, can be used and reused as many times as you like. Sleeve size is 5 1/8 x 6 1/8 in. Very high quality sleeves suitable for the most discerning collectors.