Coleman Exponent Ridgeline 20-Degree Mummy Sleeping Bag (Left Zip) Mummy style sleeping bag with 20-degree temperature rating Slim silhouette that provides optimal thermal efficiency Unique triangular draft tube, angled trapezoidal foot section 38.2-ounce Polarguard HV Packs down to 9.5 by 13 inches with 3 pound, 10-ounce weight