Blend of low density polyethylene disposable bags seal tightly, holds solids or liquids. Combination of tape and double wire framing on top of both sides make them stay open. To get a moisture and air-tight seal, whirl bag over wire tape three times and bend tabs over to lock shut. Handy pull tabs for easy opening. Material meets USDA and FDA standards. Steel wire used for bag closure is detectable with standard metal detection equipment. Protect your product and maintain quality with these sampling bags.