• PE aluminum foil
• Great pe aluminum film: the pe aluminum film construction provides excellent waterproof and moistureproof protection, ensuring your stays dry,portable ,bivy sack
• Multifunctional design: suitable for camping, hiking, and travel, this sack is a versatile and reliable option for any outdoor enthusiast, winter,sleeping bags
• Convenient drawstring design: the drawstring closure makes it easy to pack and carry, providing a easy solution for outdoor storage,bivvy sack,sack waterproof lightweight
• Convenient carry bag: the small round carry bag is designed for easy attachment to backpacks or handbags, ensuring you can take it anywhere with ease,tent bivy sack,sack survival
• Emergency whistle: includes an emergency whistle, offering essential safety features for protection and signaling during emergencies,camping ,bivy sack emergency