The Big Agnes Synthetic Sleeping Bag Liner is an insulated layer for extra sleeping bag warmth. The nylon ripstop exterior has a water repellent finish, allowing it to slip inside your sleeping bag without delay. When using it on its own, it'll shed light moisture when hanging out at the park to watch the fireworks. The PrimaLoft® Black Hi-Loft insulation is warm and packable, adding 10-15°F to your bag.
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