I buy these nonreflective heavy duty sheet protectors for my music. The constant flipping of pages in a binder is hard on the punched holes. A standard weight sheet protector doesn't hold up and they reflect any lighting making it difficult to see music while playing. The only thing I would like to see is a larger box be made available like the 100 count in the standard weight.
Staples non-glare heavyweight sheet protectors are PVC-free and acid free so they are good for storing valuable photos and papers in binders. Would like to see an American-made product. These are made in China.