1. Doubler
   Zip both pieces of the Sweetie Pie into your adult-size mummy sleeping bag to create a roomy double bag for co-sleeping. Couples wishing to sleep together can do so warmly and comfortably while saving weight and creating space. The Doubler places the zippers on the edges of your bag and the extra space provides the luxurious feeling of sleeping in a bed. It is possible to sleep back-to-back with your knees pulled up, or even add a kid or two for a portable family bed!
   Adds almost 5 feet (152cm) across the shoulders and hips.
2. Expander
   Unzip your Sweetie Pie into two pieces, and zip one half into your bag to create extra space - perfect for pregnant moms to stretch out and get extra room, nursing moms to cuddle with their babies. You can snuggle up with your toddler or even your dog! The Expander is also appreciated by robust individuals who just want more room, and for those who dislike the claustrophobic feeling of a mummy bag.
   Adds 28" of extra space across the shoulders.
3. Kid's Bag
   Zipped to itself, the Sweetie Pie makes the perfect size sleeping bag for your child! Fits kids up to 4 feet tall.
   Measurements - Neck: 20 inches, Waist: 28 inches, Footbox: 18 inches.

• Enables you to sleep together, share body heat, reduce weight, and take up less pack space!
• Made with a 70" YKK #8 coil separating zipper, 50-denier ripstop nylon, double layers of Polarguard 3D insulation with offset stitching, and built in draft tubes along the zipper.
• Color: Black Licorice
• Weight of two panels together: 2 lbs. 6oz
• Stuff Size: 7" x 14"
• Can be used on top of or underneath your bag.
• BACKPACKER Magazine Editor's Choice Award
• Lightweight
• Breathable
• Absorbs little moisture and retains loft even when wet.
• Easily stored and laundered.
• Non-allergenic and mildew resistant.
• Comes with an oversized cotton storage bag.
• Rated to 10°F (-12°C). Temperature ratings are approximate and depend on the individual. Remember, two bodies snuggling create a lot of heat.
• BackpackGearTest.org review (of a lighter summer weight version Doubler, from 2006)
• Compatible with most high-end sleeping bags made post-1999 with a full-length (or 3/4) YKK #8 zipper; this includes bags made by Sierra Designs, Mountain Hardware, Marmot, REI, and North Face. The Sweetie Pie is not compatible with the #5 zipper and many ultra-light bags.
• Please check bag compatibility before ordering, see Compatibility List below.

Compatibility List 2008
Recent "perfect fit" bags (68"-70" with YKK #8 zippers)

• SIERRA DESIGNS
  • Wild Bill
  • Paul Bunyan Wide Bag
  • Nache
• MARMOT
  • Never Summer
  • Teton
  • Pounder
  • Down Pinnacle
• REI
  • Polar Pod
  • Zenith
• MOUNTAIN HARDWARE
  • First Dimension
  • Switch 5 or 20 degree
• NORTH FACE
  • Blue Kazoo
  • Chrysalis (separate zipper on footbox)

• NORTH FACE
  • Dark Star
  • Tundra
  • Snowshoe
  • Cat’s Meow
  • Goliath
• MARMOT
  • Down Sawtooth
• REI
  • Down Sahara (relaxed fit)
  • Mohave
  • Kilo Plus

• SIERRA DESIGNS
  • Rosa
• REI
  • Zepyr
  • Zenith
• MOUNTAIN HARDWARE
  • First Dimension (68")
  • Switch
• MARMOT
  • Teton
• NORTH FACE
  • Blue Kazoo

• Lafuma (French)
• Kelty
• Western Mountaineering
• Big Agnes (no bottom insulation)

Have a different year bag or a sleeping bag from a manufacturer not listed above? You can always check compatibility by contacting the manufacturer of your sleeping bag and asking if your model bag has a YKK #8 zipper at least 65 inches long.