This bag on a roll from VacMaster (model ary-947162) is great for cutting bags to odd lengths in this case, the bag is fifty feet long, and fifteen inches wide, so if you want to vacuum seal a boa constrictor, this might be just the thing. This bag on a roll is also great for customized-cut bags for more common, but oddly-shaped or oblong items like rib racks or fish. Vacmaster's patented mesh technology keeps food & game fresh and flavorful up to 5x longer than other traditional food storage methods. Like all of VacMaster's vacuum bags, these nylon/polyethylene bags are free of B.P.A. and have F.D.A. approval for food storage.