【HumminGuru Design】: HumminGuru comprises a team of dedicated audiophile enthusiasts who deeply understand your needs. We have redesigned our Vinyl Record Jackets, Inner Sleeves, and Outer Sleeves, paying meticulous attention to every detail. Our unwavering commitment to quality ensures that your cherished collection will be preserved and enjoyed by future generations for many years to come. | 【High-Density Material】: The Outer Record Sleeves for 7 inch Vinyl Records are made from high-density polypropylene, a material widely acclaimed for its exceptional strength, chemical resistance and long-lasting durability. The album sleeves for vinyl record are 3.5 Mil thick, providing exceptional protection against dust, scratches, and unsightly blemishes for your precious records. | 【Acid Free】: Preserve your vinyl records for decades with HumminGuru Acid Free LP Outer Sleeves that are designed to prevent discoloration and protect album covers. | 【Crystal Clear Transparency】: The crystal clear album covers sleeves allow you to easily view and exhibit the artwork/labels on your favorite albums. | 【Seamless】: The vinyl record outer sleeves we offer feature a seamless design, meaning there are no visible seams. This design of the outer cover allows you to store your records horizontally in your record storage. The outer sleeves have also enhanced the durability of the seams, making them highly resistant to breaking. Unlike traditional outer sleeves that are prone to tearing when inserting albums, our design ensures superior durability and longer-lasting use.