Tetra Plastic Fish Bags, Pet And Feeder Fish Transport, 1.5 Millimeters, 6 x 12 Inches, 1,000 Count STURDY PLASTIC: 1.5 millimeters thick plastic bag. RELIABLE TRANSPORTATION: Durable bags for transporting pet and feeder fish. DIMENSIONS: Bags are 6 inches x 12 inches. BULK PACK: 1,000 bags per case. TRUSTED BRAND: You can always trust your tank to Tetra products.