Perfect for hybrid scrapbooking! Layer Waterfall Sleeves with the Photo Sleeve Fuse (sold separately). Strong, clean, micro- weld seams will not tear or separate! Will not stick to photographs, memorabilia or photocopies. This package contains We R Memory Keepers-Photo Sleeve Fuse Waterfall Sleeves, 20 4x4 inch clear polypropylene film photo sleeves. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm: Do not mouth or chew. Acid and PVC free. Archival quality.