Overfill sport pack and accessory More than nine years of

More than nine years of research and development went into the patented Multi-Purpose Device (MPD)

you can rest easy knowing all your gear is made from responsible fabrics

For this application

Up to 2 days with moderate tree cover

Overfill sport pack and accessory More than nine years ofExtra Warmth and Long Term Loft Retention. The Overfill option allows you to add extra down throughout your fully baffled sleeping bag, increasing warmth by approximately 5F. In addition to providing extra insulation, an overfill helps maintain loft over extended use. Over time, down can compress due to moisture, dirt, and body oils, reducing its effectiveness. Adding extra down helps counteract this by improving long term performance and durability.