LARGE+ BOX SET outer sleeves. Use over 1-1/8 - 1-5/8" thick boxes. Fits over slightly bigger boxes than my 4mil large. 1.6mil thickness. Clear polypropylene plastic with resealable strip on flap for a custom closure. Protects from dust, dirty hands, oily fingertips, shelf wear, & minor impact + abrasions. Also preserves shrink wrap. Acid & lignin free, archival safe. Orders go out within 24 hours, USPS (worldwide). Buy other sizes too : ) Support Sleevie best w/ multiple items @ checkout ♥