These Emergency Waterproof & Windproof Matches are in a durable, waterproof case that floats and keeps contents dry and protected. Moulded, vertical ribbing provides a sure grip in wet, harsh conditions. External, integrated, and replaceable striker for easy lighting. Includes 20 windproof and waterproof matches. Matches are easy to light and will relight after being submerged in water! Up to 15-second burn time.