When you buy something through one of the links on our site, we may earn an affiliate commission.
The REI Co-op Men's Flash 45 Pack is a midrange backpacking backpack that comes in two sizes (S, M), while the REI Co-op Men's Flash 55 Pack is a midrange backpacking backpack that comes in three sizes (S, M, L).
See the key differences:
 |
 |
|
|---|---|---|
| REI Co-op Men's Flash 45 Pack | REI Co-op Men's Flash 55 Pack | |
| MSRP | $159.00 | $199.00 |
| Shop Online | $159.00 at REI | $199.00 at REI |
| Best Used For | Backpacking | Backpacking |
| Weight |
S: 2 lbs. 7.5 oz. M: 2 lbs. 8.5 oz. |
S: 2 lbs. 9 oz. M: 2 lbs. 10 oz. L: 2 lbs. 11 oz. |
| Volume |
S: 43 liters M: 45 liters |
S: 53 liters M: 55 liters L: 57 liters |
| Gender | Men's | Men's |
| Fit - Waist | S: 30-40 inches, M: 32-42 inches | S: 30-40 inches, M: 32-42 inches, L: 34-46 inches |
| Dimensions | S: 14 x 28 x 11 inches, M: 14 x 29 x 11 inches | S: 14 x 29 x 12 inches, M: 14 x 30 x 12 inches, L: 14 x 31 x 12 inches |
| Sizes | S, M | S, M, L |
| Colors | Pumpkin | Asphalt, Olive Oil |
| Materials | Ripstop nylon; nylon Oxford (bluesign® approved) | 100-denier ripstop nylon main body; 420-denier nylon bottom |
| Description | Pack what you will for your weekend trip-the men's REI Co-op Flash 45 pack holds your load stable and steady. A contoured hipbelt and ventilated back panel let you hike cool and comfy. | Loaded for a week or stripped down for an overnighter, the men's REI Co-op Flash 55 pack keeps your load stable and steady. Seamlessly integrated suspension makes your hike cool and comfortable. |
Weight
See the weight difference between the REI Co-op Men's Flash 45 Pack vs REI Co-op Men's Flash 55 Pack.
The lightest version of the REI Co-op Men's Flash 45 Pack weighs 1.5 ounces less than the lighest version of the REI Co-op Men's Flash 55 Pack.
Price vs. Weight
Compare the price-to-weight ratio of the REI Co-op Men's Flash 45 Pack and REI Co-op Men's Flash 55 Pack to all the other backpacking backpacks in our database.
Volume
The smallest size REI Co-op Men's Flash 45 Pack holds 10 liters less than the smallest size of the REI Co-op Men's Flash 55 Pack.
See how much gear each pack carries:
Price vs. Volume
Compare the price-to-volume ratio of the REI Co-op Men's Flash 45 Pack and REI Co-op Men's Flash 55 Pack to all the other backpacking backpacks in our database.
Load Range
Compare how many pounds of gear each pack can comfortably carry.
Where to Buy
At the time of publishing, the REI Co-op Men's Flash 45 Pack retails for $40 less than the REI Co-op Men's Flash 55 Pack on REI.com.
See the latest deals at top retailers:
Price History
Select a pack to see its price history from top retailers. Click on a retailer’s name to add or remove it from the chart.
