Ignik XL Warmers are air-activated, Arctic-grade warmers designed for reliable, consistent heat lasting up to 24 hours. Made from safe, natural, and 98% biodegradable ingredients, they come in a resealable pouch that maintains freshness for up to 72 hours after opening. The warmers activate within 5-10 minutes and provide extra heat near the body in extreme cold. The pouch is reusable and recyclable, and the warmers can be composted after use.