Read Expert Boot Advice in Our Media SectionSierra Says: The Cirrus is Celsius? flagship boot. It is designed with all the best tech and comfort so you?re provided with an exceptional performance-enhancing feel and ride. Crafted to go anywhere and everywhere, the Cirrus has a nice medium flex to amplify its versatility. New this season is the creation of a Folded Seam that prevents the boot from poking out and wearing down your kicks. So for any of you aggressive riders that tear up your gear fast, check out the Cirrus: you will be working harder than ever to tear these apart.
Celsius Says: The cream of crop, that continues to rise to the top?the Cirrus is our staple boot and has been a team favorite since we started in this game. Stiff enough for your all mtn. feasts, yet soft and flexy where you need it for your play days in the park.
- Tradtional lace, o-zone speed lace and dbl boa w/h2 coiler emblem(wht/blk only)
- inFusion 2 Liner
- Custom molded insole with arch support
- Ankle harness
- One piece o-zone stoke strap for enhanced heel hold and fit(lace)
- Custom Celsius 3 part outsole with hidden gel
- Lace lock claw(lace)
-Stiffness 7/10
Printable Mens US Foot Measuring Guide
Printable Womens US Foot Measuring Guide
| Mens Boots Size Conversion | Womens Boot Size Chart |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM | US Sizes | Euro Sizes | UK Sizes | Inches | CM |
| 6 | 39 | 5.5 | 9.25" | 23.5 | 4 | 35 | 2 | 8.1875" | 20.8 |
| 6.5 | 39 | 6 | 9.5" | 24.1 | 4.5 | 35 | 2.5 | 8.375" | 21.3 |
| 7 | 40 | 6.5 | 9.625" | 24.4 | 5 | 35-36 | 3 | 8.5" | 21.6 |
| 7.5 | 40-41 | 7 | 9.75" | 24.8 | 5.5 | 36 | 3.5 | 8.75" | 22.2 |
| 8 | 41 | 7.5 | 9.9375" | 25.4 | 6 | 36-37 | 4 | 8.875" | 22.5 |
| 8.5 | 41-42 | 8 | 10.125" | 25.7 | 6.5 | 37 | 4.5 | 9.0625" | 23 |
| 9 | 42 | 8.5 | 10.25" | 26 | 7 | 37-38 | 5 | 9.25" | 23.5 |
| 9.5 | 42-43 | 9 | 10.4375" | 26.7 | 7.5 | 38 | 5.5 | 9.375" | 23.8 |
| 10 | 43 | 9.5 | 10.5625" | 27 | 8 | 38-39 | 6 | 9.5" | 24.1 |
| 10.5 | 43-44 | 10 | 10.75" | 27.3 | 8.5 | 39 | 6.5 | 9.6875" | 24.6 |
| 11 | 44 | 10.5 | 10.9375" | 27.9 | 9 | 39-40 | 7 | 9.875" | 25.1 |
| 11.5 | 44-45 | 11 | 11.125" | 28.3 | 9.5 | 40 | 7.5 | 10" | 25.4 |
| 12 | 45 | 11.5 | 11.25" | 28.6 | 10 | 40-41 | 8 | 10.1875" | 25.9 |
| 13 | 46 | 12.5 | 11.5625" | 29.4 | 10.5 | 41 | 8.5 | 10.3125" | 26.2 |
| 14 | 47 | 13.5 | 11.875" | 30.2 | 11 | 41-42 | 9 | 10.5" | 26.7 |
| 15 | 48 | 14.5 | 12.1875" | 31 | 11.5 | 42 | 9.5 | 10.6875" | 27.1 |
| 16 | 49 | 15.5 | 12.5" | 31.8 | 12 | 42-43 | 10 | 10.875" | 27.6 |
| Youth Boot Size Conversion | Kids Boot Size Conversion |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM | US Sizes | Euro Sizes | UK Sizes | Inches | CM |
| 12.5 | 30 | 11.5 | 7.25" | 18.4 | 5.5 | 21 | 4.5 | 5" | 12.7 |
| 13 | 31 | 12 | 7.5" | 19.1 | 6 | 22 | 5 | 5.125" | 13 |
| 13.5 | 31 | 12.5 | 7.625" | 19.4 | 6.5 | 22 | 5.5 | 5.25" | 13.3 |
| 1 | 32 | 13 | 7.75" | 19.7 | 7 | 23 | 6 | 5.5" | 14 |
| 1.5 | 33 | 14 | 8" | 20.3 | 7.5 | 23 | 6.5 | 5.625" | 14.3 |
| 2 | 33 | 1 | 8.125" | 20.6 | 8 | 24 | 7 | 5.75" | 14.6 |
| 2.5 | 34 | 1.5 | 8.25" | 21 | 8.5 | 25 | 7.5 | 6" | 15.2 |
| 3 | 34 | 2 | 8.5" | 21.6 | 9 | 25 | 8 | 6.125" | 15.6 |
| 3.5 | 35 | 2.5 | 8.625" | 21.9 | 9.5 | 26 | 8.5 | 6.25" | 15.9 |
| 4 | 36 | 3 | 8.75" | 22.2 | 10 | 27 | 9 | 6.5" | 16.5 |
| 4.5 | 36 | 3.5 | 9" | 22.9 | 10.5 | 27 | 9.5 | 6.625" | 16.8 |
| 5 | 37 | 4 | 9.125" | 23.2 | 11 | 28 | 10 | 6.75" | 17.1 |
| 5.5 | 37 | 4.5 | 9.25" | 23.5 | 11.5 | 29 | 10.5 | 7" | 17.8 |
| 6 | 38 | 5 | 9.5" | 24.1 | 12 | 30 | 11 | 7.125" | 18.1 |
| 6.5 | 38 | 5.5 | 9.625" | 24.4 | | | | | |
| 7 | 39 | 6 | 9.75" | | | | | | |
| Please note that European size conversions vary by country and manufacturer. Because the foot is three-dimensional, any two-dimensional measuring tool, such as a ruler or Brannock device, can only approximate your true shoe size. Please also keep in mind that manufacturers use different lasts to construct their shoes, and sizing may vary accordingly. |
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