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Footwear Sizing

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Men's and Women's Footwear Sizing

Men's Footwear sizing
US Size 4 5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14 15
UK Size 4.5 5.5 6 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 13 14
EU Size 37.5 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47.5 48.5 49.5
Select styles in sizes 7-13 also available in Wide.


Women's Footwear sizing
US Size 5 6 6.5 7 7.5 8 8.5 9 9.5 10
UK Size 3.5 4.5 5 5.5 6 6 6.5 7 7.5 9
EU Size 36 38 38 39 39 40 41 41 42 43

5.11 footwear fit information

Our boots and shoes feature three distinct fits generally based on the intended use for the boot and its materials and construction. If you’ve worn our ATAC boots you’ve been wearing our most roomy fit and many of our newer boots and shoes feature a lower volume fit. Look for these three icons for a better understanding of how each different collection of boots will fit.

Hi Volume, generous fit
Fit Spectrum
Low Volume, responsive fit
Pro-fit

PRO FIT is our tried and true ATAC fit, the most generous fit with the highest volume overall.

>15mm drop heel to toe.

Examples: ATAC family, SPEED 2, Company 2.0