One hundred perfectly tight fitting inner-sleeves for standard size gaming cards measuring up to 63x88mm (2 1/2" by 3 1/2") Acid free ultra clear 40 micron polypropylene absolutely free of PVC. These sleeves are side-loading and will fit easily inside regular Dragon Shield card sleeves, offering supreme protection for your cards. The semi-transparent smoked back is the pefect companion for all of your lighter colored outer sleeves. Increases opacity dramatically.