Big Agnes Alpha Direct Fleece Sleeping Bag Liner Turn Up the Heat Add 5-10degF of warmth to any sleeping bag with the Alpha Direct Fleece Sleeping Bag Liner, made from soft, super-breathable microfleece. Protect your investment while traveling or backpacking by keeping dirt and body oil out of your sleeping bag, and enjoy the luxe comfort of genuine fleece against skin. The reversible design fits either left or right-handed zippered bags, making it versatile for any setup, and the minimalist cinch-hood closure allows one-handed temperature adjustment when you need it. Features Polartec Alpha Direct microfleece adds 5-10degF of warmth while remaining extremely breathable and soft to the touch Machine-washable fleece construction protects your sleeping bag from dirt and body oils while keeping this liner easy to clean and maintain Reversible design with minimalist cinch-hood closure fits left or right-handed zippered sleeping bags and allows one-handed temperature adjustment SPECIFICATIONSIntended Use Warmth boost Materials Recycled fleece Fit Unisex - Mummy Shape SIZE CHARTSize Fits Up To Girth (shoulder, hip, foot)Weight Regular6'60" x 54" x 39"7 oz / 191 g Long6'6"63" x 57" x 42"7. 5 oz / 211 g | Big Agnes | Alpha Direct Fleece Sleeping Bag Liner