5.11 Speed 4.0 8in Desert Rapid Dry Boots
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5.11 Speed 4.0 Desert RapiDry™ 8" Boot
Overview
Heat, grit, pressure—bring it on. 5.11’s Speed 4.0 Desert RapiDry™ 8" Boot is built for lightweight speed and all-terrain toughness in hostile climates. A fast-drying microsuede and 1000D nylon upper shrugs off abuse and sheds moisture quickly, while high-abrasion mesh in the tongue keeps air moving when the mercury climbs. Underfoot, a 5.11 Heat Deflect insole layer bounces back ground heat, Force Foam® heel cushioning and an OrthoLite® footbed keep every step dialled in, and a stitched outsole delivers long-haul durability. The ASTM slip- and oil-resistant outsole maintains traction when it counts, and the YKK® side zip with a secure tab makes entry and exit fast and clean. Desert-ready kit for high-tempo ops and hotter days.
Key Features
- Rapid-dry microsuede upper with 1000D nylon for lightweight durability
- High-abrasion mesh tongue for enhanced breathability
- 5.11 Heat Deflect insole layer to reduce radiant ground heat
- Force Foam® heel cushioning for impact absorption
- OrthoLite® footbed for all-day comfort and support
- ASTM slip- and oil-resistant outsole for dependable traction
- Outsole stitching for added durability on rough terrain
- YKK® side zip with locking tab for rapid on/off
- Low-profile, all-terrain design optimised for hot, arid environments
Specifications
- Height: 20.3 cm (8")
- Upper: Microsuede & 1000D nylon; contains recycled polyester and nylon
- Lining: High-abrasion, breathable mesh
- Midfoot/Heel: Force Foam® cushioning
- Footbed: OrthoLite®
- Outsole: ASTM slip- & oil-resistant; stitched construction
- Entry: YKK® side zip with security tab
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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
