These 10" polylined white paper inner sleeves are the perfect mix of album protection and rigidity for easy insertion! The High Density Polyethylene (HDPE) inner layer protects your vinyl from scratching and dust, while the super heavyweight (27#) paper exterior makes the record stand up nicely inside the jacket. - Super heavyweight paper (27#); - High Density Polyethylene inner layer; - Acid-free, archival quality; - Premium protection; - Exterior glued flaps for easier insertion; - .25" lip for easier insertion; - static free; - each sleeve measures 10.125" x 10" (258mm x 254mm);