The msr munro bothy 4 is a lightweight and compact emergency storm proof shelter suitable for up to 4 people that offers much needed protection from the elements in an emergency the outer of this bothy bag is waterproof and it has a waterproof floor flap to keep you dry when you are sitting it also has multiple vents to keep you comfortable and a clear window so you can keep an eye on the weather making this an essential part of your emergency kit