Synthetic: 4 Season (+10 and Below)

Mountain Hardwear 4th DiMen'sion Sleeping Bag:
The 4th Dimension is a cold weather, synthetic bag featuring Mountain Hardwears exclusive Quantum Expander so you can add a full 8 to the bags girth. Shingled Polarguard Delta insulation and innovative Ergo Draft Collar keep you warm down to -20ºF.

• Shingle construction maximizes loft.
• Differential cut maintains maximum loft.
• Continuous filament Polarguard® insulation is durable and lofty.
• Expandable draft tube provides additional room for warm temps and layering space for colder temps.
• Ergonomic draft collar seals in heat below the shoulders.
• Multi-panel contoured hood forms around head and seals in heat.
• Double draft tubes keep heat in.
• Two-way locking zipper sliders stay in place when venting.
• Snag guards prevent fabric from catching in the zipper.
• Insulated zipper gusset seals in heat at bottom of zipper.
• Comfort Footbox follows natural foot position for improved fit and warmth.
• Tie-in loops stabilize upgrade liner.
• Single handed draw cords on hood and collar.
• Fill weight: 50 oz.
• Shell Material: 40D Nylon Taffeta
• Max user height: 6 ft.
• Stuffed size: 10 x 18 in.
• Shoulder circumference: 63 in.
• Average weight: 4 lb. 8 oz.