Synthetic: 4 Season (+10 and Below)

Mountain Hardwear 3rd DiMen'sion (Old):
Some bags are snug and built for frigid conditions when survival depends on optimizing thermal performance. Other bags are built loose and wide for camping or leisure backpacking--the perfect choice for summer. If you wanted a good night's sleep, you've had to settle for buying one of each, but thanks to a special expandable draft tube in the Mountain Hard Wear Quantum series, you can own one sleeping bag that keeps you comfortable in a broad range of temperature conditions. Rated to 0 F, the Third Dimension features an expandable draft tube that provides up to 8 in. of additional room for warm temperatures and layering space in cold conditions. Contoured hood and foot box for added thermal protection beyond the torso.

• Shell: Water repellent and wind resistant 1.2 oz. nylon ripstop fabric
• Polarguard 3D insulation
• Insulated zipper gusset to seal in heat at the bottom of zipper
• Performance-cut mummy shape for increased warmth while reducing weight
• Contoured hood forms around head to seal in heat
• Contoured foot box
• Double webbing snag guards to minimize zipper snags
• Differential cut to help maintain optimal loft
• Velcro® tab at zipper folds back to protect bag from snags
• Two-way locking zipper sliders stay in place while venting
• Expandable draft tube provides up to 8 in. of additional room for warm temperatures and layering space in cold conditions
• Stuff sack size: 10 in. x 20 in. (25 cm. x 51 cm.)
• Internal length: 78 in. (198 cm.)
• Shoulder girth: 60 in. (152 cm.)
• Foot girth: 40 in. (102 cm.)
• Rated to 0F (-18C)
• Weight: 3 lbs. 13 oz. (1.73 kg.)