Skinny FilterFirst 12"x72" + FilterFirst 12"x72" + Polishing Pad 100 Micron Bundle BUNDLE & SAVE: This bundle contains: 1x FilterFirst 12" x 72" x 3/8 to 1/2 thick, 1x FilterFirst 12" x 72" x 3/4 to 1" thick and 1x Polishing Filter Pad 100 Micron 24" x 36" CUSTOMER AND PROFESSIONALS CHOICE - Our Premium TRUE dual density bonded filter pad is the top choice for my clients as well as my aquarium service technicians. Our NEW 3rd generation dual layer aquarium filter pads are even thicker than before. The top layer's open fiber construction traps LARGER PARTICLES while the bottom layer's dense fiber network TRAPS FINE PARTICLES - working together to produce crystal clear water in your aquarium. HIGH QUALITY AND DURABLE - Our filter floss aquarium pad is CONSTRUCTED OF DURABLE POLYESTER FIBERS bonded by our special resin to give it EXCEPTIONAL STRENGTH. The lower section of our pad is made by taking layers of resilient fibers through a special process to tighten and entangle the fibers into a dense network producing a thin firm layer, perfect for removing fine debris. Our premium pads' consistent, reliable design gives SUPERIOR FILTRATION. WATER QUALITY- Place our polishing pad in the path of flowing water TO TRAP LARGE AND FINE FLOATING PARTICULATES. This filter pad is very efficient at trapping very fine particles so regular cleaning of the pad is necessary. It may BE USED ALONE OR LAYERED WITH OTHER FILTER PADS such as our Classic or Premium filter pads to extend cleaning time. ENVIRONMENTALLY FRIENDLY - All our products are completely safe for all fish and other aquatic life.