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
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
