Protect your investment in digital imaging with these sleeves which boast leak proof construction with extra soft, tear resistant plastic. Tear resistance. Pre-punched hole for easy insertion. Cost-effective 1.Latex free. Defend Syringe Sleeves are excellent protective barriers for three-way air/water syringes made of tear-resistant plastic. These covers come with a pre-punched opening to make the insertion of syringe tips much more convenient.Each pack comes with 500 disposable syringe sleeves.