REI Mars 85

1 review
5-star:   0
4-star:   1
3-star:   0
2-star:   0
1-star:   0



Great pack. Very durable and is easy on the back.

Rating: rated 4 of 5 stars
Source: bought it new
Price Paid: $125


Great pack. Very durable and is easy on the back.


  • Easy access
  • Not hard on the back


  • Can become uncomfortable
  • Straps sometimes loosen

This is a great pack. It handled a 45 lb load pretty easily. The straps seemed to loosen on their own occasionally, but other than that it was a great pack to use.

Manufacturer's Description

Visit REI's Mars 85 page.

Retailers' Descriptions

Here's what other sites are saying:

Built to handle heavy loads that include the creature comforts, the REI Mars pack handles extended backpacking in any season. Enjoy dual access to pack via the top-loading opening and the horseshoe-shaped, zippered front panel opening, which works much like a duffel opening. With a rip-and-stick torso adjustment, shoulder strap system easily slides along pack's frame to fit torsos of varying lengths. Removable top lid pocket with water repellent zipper lets you stash your essentials to bring into tent, so pack can stay outside or in vestibule. Zippered pocket under lid stores maps and keys, spare batteries and other small essentials. Front panel features a welded, water-repellent zippered pocket for storing often-used gear. Precurved shoulder straps match your anatomy for nonbinding comfort on and off the trail. Dual-density foam padded back panel provides a comfortable and supportive fit when carrying heavy loads. Precurved hipbelt is designed to cradle hip bones for a natural fit and to distribute weight without sagging. Hipbelt webbing system allows you to use a natural forward pulling motion for quick, easy cinching and precise adjustment. Internal sleeping bag compartment is created by a zippered divider, separating it from gear and clothes in the main compartment. Streamlined compression system uses 4 buckles to cinch and strap down loads for jostle-free carrying. Concave head pod at the top of pack gives your head freedom of movement-no more staring at the ground. 2 side pockets-1 zip and 1 mesh-hold water bottles, energy bars and other essentials you want close at hand. Side hipbelt pocket stores small essentials you want at your fingertips, such as lip balm and sunscreen. Lash points on the other side of hipbelt let you attach camera and GPS pouches, sold separately. Lash straps on bottom of pack let you attach sleeping pad.


REI Mars 85

previously retailed for:
$103.93 - $154.93

The REI Mars 85 is not available from the stores we monitor. It was last seen November 26, 2011 at REI.

If you're looking for a new expedition pack (4,500+ cu in), check out the best reviewed current models.