Lighthouse's basic currency sleeves are made of unplasticized safety vinyl (hard PVC).
They are top-loading with the sides and bottom sealed and the top open to insert bank notes.
Sold in packs of 50.
For banknotes up to:
6 1/4 in 3 in (158mm x 75mm) Fractional/Modern
Outer Dimensions: 6 1/2 in 3 1/4 in
(166mm x 81mm)