5.11 A/T Mid Boots (Ancient Fossil)
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This is the 5.11 A/T Mid (Ancient Fossil). Featuring 3D molded TPR toe and heel protection, a welded/mesh upper, and high performance, high traction outsole, the All Terrain Load Assistance System (A.T.L.A.S.) will mitigate the rigours of a heavy load bearing job (and in no small way, either). The mids were developed to work with your "work weight". Work longer, with less stress even when you’re loaded down.
Specifications
- High Abrasion mesh upper
- 3D molded TPR toe and heel
- Upper TPU welded support structure
- 5.11 A.T.L.A.S. Technology and Support Plate
Features & Benefits
- A.T.L.A.S. All Terrain Load Assistance System
- 3D molded TPR toe and heel protection
- Welded mesh upper
- ASTM slip and oil resistant high traction outsole
- 5.11 A.T.L.A.S Technology Support Plate
- Echo Foam high rebound/energy return PU and Force Foam lightweight PU impact cushioning
- Ortholite® footbed
- 5.11 A.T.L.A.S. Technology
Size Guide
Open the size guide to check sizing and get the best fit possible.
5.11 Tactical Boots
UK sizing shown alongside EU and US equivalents.
| UK | 3 | 4 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EU | 37 | 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 |
| US | 4 | 5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 |
| CM | 22 | 23 | 24 | 24.5 | 25 | 25.5 | 26 | 26.5 | 27 | 27.5 | 28 | 28.5 | 29 | 29.5 | 30 | 31 | 32 | 33 |
UK 3EU 37 | US 4
UK 4EU 37.5 | US 5
UK 5EU 38.5 | US 6
UK 5.5EU 39 | US 6.5
UK 6EU 40 | US 7
UK 6.5EU 40.5 | US 7.5
UK 7EU 41 | US 8
UK 7.5EU 42 | US 8.5
UK 8EU 42.5 | US 9
UK 8.5EU 43 | US 9.5
UK 9EU 44 | US 10
UK 9.5EU 44.5 | US 10.5
UK 10EU 45 | US 11
UK 10.5EU 45.5 | US 11.5
UK 11EU 46 | US 12
UK 11.5EU 47.5 | US 13
UK 12EU 48.5 | US 14
UK 13EU 49.5 | US 15
Sizing Instructions






