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When we built the Borealis, we had one goal—create the ultimate daypack. 25 years later, its legacy continues. Originally designed with the organization needed for a full day on the trail, it has since become a classic on campus and on the job. Celebrated for its iconic bungee straps, comfortable FlexVent™ suspension system and protective compartments for your most important items, there’s no limit to where you’ll go. Spacious but light. Sturdy but balanced. This isn’t just a backpack. This is the Borealis.
Fitting Chart
Notes About Measuring Your Feet
Because they are flat, rulers can only approximate the size of your foot. Don't forget that manufacturers measure shoe sizes differently, and as a result, sizes may vary. When measuring your foot, ensure that you are standing and wearing the socks or stockings that will be worn with your new shoes when they arrive.
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| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 4 | 35 | 1 | 8.1875 | 20.8 |
| 4.5 | 35 | 1.5 | 8.375 | 21.3 |
| 5 | 35-36 | 2 | 8.5 | 21.6 |
| 5.5 | 36 | 2.5 | 8.75 | 22.2 |
| 6 | 36-37 | 3 | 8.875 | 22.5 |
| 6.5 | 37 | 3.5 | 9.0625 | 23 |
| 7 | 37-38 | 4 | 9.25 | 23.5 |
| 7.5 | 38 | 4.5 | 9.375 | 23.8 |
| 8 | 38-39 | 5 | 9.5 | 24.1 |
| 8.5 | 39 | 5.5 | 9.6875 | 24.6 |
| 9 | 39-40 | 6 | 9.875 | 25.1 |
| 9.5 | 40 | 6.5 | 10 | 25.4 |
| 10 | 40-41 | 7 | 10.1875 | 25.9 |
| 10.5 | 41 | 7.5 | 10.3125 | 26.2 |
| 11 | 41-42 | 8 | 10.5 | 26.7 |
| 11.5 | 42 | 8.5 | 10.6875 | 27.1 |
| 12 | 42-43 | 9 | 10.875 | 27.6 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 6 | 39 | 5 | 9.25 | 23.5 |
| 6.5 | 39 | 5.5 | 9.5 | 24.1 |
| 7 | 40 | 6 | 9.625 | 24.4 |
| 7.5 | 40-41 | 6.5 | 9.75 | 24.8 |
| 8 | 41 | 7 | 9.9375 | 25.4 |
| 8.5 | 41-42 | 7.5 | 10.125 | 25.7 |
| 9 | 42 | 8 | 10.25 | 26 |
| 9.5 | 42-43 | 8.5 | 10.4375 | 26.7 |
| 10 | 43 | 9 | 10.5625 | 27 |
| 10.5 | 43-44 | 9.5 | 10.75 | 27.3 |
| 11 | 44 | 10 | 10.9375 | 27.9 |
| 11.5 | 44-45 | 10.5 | 11.125 | 28.3 |
| 12 | 45 | 11 | 11.25 | 28.6 |
| 13 | 46 | 12 | 11.5625 | 29.4 |
| 14 | 47 | 13 | 11.875 | 30.2 |
| 15 | 48 | 14 | 12.1875 | 31 |
| 16 | 49 | 15 | 12.5 | 31.8 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 8 | 24 | 7 | 5.8 | 14.6 |
| 8.5 | 25 | 7.5 | 6 | 15.2 |
| 9 | 25 | 8 | 6.2 | 15.6 |
| 9.5 | 26 | 8.5 | 6.3 | 15.9 |
| 10 | 27 | 9 | 6.5 | 16.5 |
| 10.5 | 27 | 9.5 | 6.6 | 16.8 |
| 11 | 28 | 10 | 6.8 | 17.1 |
| 11.5 | 29 | 10.5 | 7 | 17.8 |
| 12 | 30 | 11 | 7.1 | 18.1 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 13 | 31 | 12 | 7.5 | 19.1 |
| 13.5 | 31 | 12.5 | 7.6 | 19.4 |
| 1 | 32 | 13 | 7.8 | 19.7 |
| 1.5 | 33 | 14 | 8 | 20.3 |
| 2 | 33 | 1 | 8.2 | 20.6 |
| 2.5 | 34 | 1.5 | 8.3 | 21 |
| 3 | 34 | 2 | 8.5 | 21.6 |
| 3.5 | 35 | 2.5 | 8.6 | 21.9 |
| 4 | 36 | 3 | 8.8 | 22.2 |
| 4.5 | 36 | 3.5 | 9 | 22.9 |
| 5 | 37 | 4 | 9.2 | 23.2 |
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