COMFORT CLEAN: Keep your sleeping bag clean and extend its life by using this liner as a protective layer. STAY WARM: The liner with no fill adds an extra layer of warmth without the extra bulk, making it perfect for chilly nights. COMPATIBLE: This liner is designed to seamlessly integrate with the CORE oversized and hybrid sleeping bags, which feature loops that are ready to be easily attached to this liner&';s toggles, providing a no-slip connection. EASY ATTACHMENT: Quick to attach and detach, this liner is a breeze to use for simple removal or cleaning, so you can focus on enjoying your outdoor adventure. MACHINE WASHABLE: Made with durable and soft fabrics to keep you cozy on your adventures, and when you get home, no need to worry about any mess - it&';s machine washable and easy to care for!