Sea to Summit Reactor Extreme Thermolite Mummy Sleeping Bag Liner Hydration so we developed a large

so we developed a large J-zip access panel on the front of the pack with multiple

and an on/off lever that makes it easy to prevent leaks

Forever ends the debate about whether you can afford the extra weight of a pack cover - the medium size weighs less than 4 ounces and packs into a tiny stuff sack

the Astro 250 features a compact body that is more ergonomic

Sea to Summit Reactor Extreme Thermolite Mummy Sleeping Bag Liner Hydration so we developed a largeIdeal as part of a cold climate sleep system or standalone bag in warm weather. FEATURES Adds up to 15C 25F warmth to a sleeping bag Super insulative 110g m2 THERMOLITE throughout for extra warmth Mummy shape with a box foot Draw cord hood with mini cord lock Extends life of sleeping bags by keeping them clean Contrasting colour along the top edge makes it easier to find the opening Packs into its own Ultra Sil stuff sack Easy care, machine washable