The Coghlan's Snaplight Lightsticks 2 Pack is an amazingly convenient weatherproof safety light and survival tool. It features chemiluminescent technology that is safe and reliable for use in all conditions. Available in several colors, this versatile tool can be used as warning lights, marker lights, signal lights, dive lights or safety lights. It can also be used as dozens of other applications while camping, fishing, hunting or hiking. Includes 2 Lightsticks with a 12 hour lifetime. Non-toxic.