The Mountain Equipment Mirrostat 7.0 is a sleeping mat that delivers a superb warmth-to-weight ratio. You get an official R-value rating of 4.5, which for some campers will be suitable for winter ...

The Kelty Cosmic SI Mummy Sleeping Mat offers good warmth and a large sleeping area, but the penalty is weight and packsize. However, the build quality is strong too, making it a decent choice for ...