Put it inside your sleeping bag! It is the perfect size to fit into most sleeping bags! Greatest Warmth-to-Weight Ratio, always a favorite of the ultralight elite, light, durable, and versatile closed-cell foam mat in a rapidly-deployable folding form. Mountain SpringM1A+ (PLUS)can be used alone for alpinism and ultralight backpacking, or under an inflatable mat as puncture protection and added insulation.
