the idea behind oven ease bags is to give those companies a platform for adding marinades or rubs to raw meat, sealing the product in a conventional rotary chamber machine, and then realizing a premium at the retail or foodservice level. the multilayer, nylonbased bag includes an inner ply that will form a good seal on a standard machine and a tough outer ply that will withstand two hours in a 400° f oven, or four hours at 375°. total thickness is about 3 mils. cooked meats can be kept warm and moist inside the bag for hours without fear.   
