Sleeping Bag Expander
from Functional Design
- 2002 BACKPACKER magazine Editors Choice Award
- patented design saves weight and creates space
- can be used on the top or bottom
- weight: 19 oz. width 28"
- "We aren't mummies after all."
Functional Design's Sleeping Bag Expander converts your single person mummy bag into a roomy bag for one or a cozy bag for two people. The Expander offers comfort for big guys, and for campers who dislike the claustrophobic feeling of a mummy bag. It is the perfect solution for couples who like to cuddle. Zip two Expanders together, and into your mummy bag, and you've got yourself a roomy bag for two. The Expander was designed to accommodate the varying needs of bicyclists, kayakers, rock climbers, ultralight backpackers, and college students. The Expander is available in 3-season weight, and can be used on the top or underneath your mummy bag. Functional Design's Expander is made with a full-length 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. The result is a highly compressible insert that is lightweight, breathable, absorbs little moisture and retains loft even when wet. The Expander is easily stored and laundered, and is non-allergenic and mildew resistant. Compatibility issues: In 1999 YKK standardized its #8 coil separating zipper; the Expander is compatible with most high-end bags made post 1999 with a full-length zipper; this includes bags made by Marmot, Sierra Designs, REI, North Face, and Mountain Hardware. "We aren't mummies after all."
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