Premium Whole Hog/Pig Storage Bag (Medium Weight) Made in the USA, with a capacity of up to 400Lbs. Dual zipper pulls to facilitate opening and closing bag 2 layers of 3-mil polyethylene film laminated to 1000 denier scrim reinforcement material (equiv strength to 12 mil vinyl). Electronic heat-sealed construction to comply with OSHA regulations. Remains flexible to 70 degrees F. (-57 degrees C.) so that it can be used in winter environments or coolers without fear of the material cracking.