5.11 Topo Box Vent-Tac Cap
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The Topo Box Vent-Tac™ Cap is not your dad’s trucker. This high-performance six-panel cap is constructed from durable four-way stretch, double-weave fabric with Enduro-Flex™ properties and a moisture-repellant coating. Perforated back panels with Vent-Tac™ features quickly funnel heat away from your head. Embroidered eyelets at the crown maximize ventilation. The anti-odor, wicking jersey sweatband includes a foam insert to ensure all-day comfort. Buckram-backed front panels add structure that will endure years of wear. The standard curve brim is finished with eight rows of stitching for durability. The snapback closure on the rear ensures the right fit. No matter the conditions, the Topo Box Vent-Tac™ Cap easily outperforms regular caps.
Specifications
- 89% polyester/ 11% elastane 4-way stretch double weave with Enduro-Flex™ properties, 5.5-oz., DWR finish
Features & Benefits
- 4-way stretch fabric with Vent-Tac™ features
- 6-panel construction
- Buckram lined front panels for structure
- 5.11 logo patch at bottom front left panel
- Loop patch and [+] embroidery at top of cap
- Snapback closure with 5.11 [+] flag label
- Perforated fabric on back 4 panels
- Wicking and anti-odor jersey fabric sweatband with foam insert
- Eight rows of bill stitching
Size Guide
Open the size guide to check sizing and get the best fit possible.
5.11 Tactical Clothing
Arm length refers to your actual arm length, not the garment's sleeve length.
| Size | XS | Small | Medium | Large | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Chest | 76.2-81.330-32 | 86.4-91.434-36 | 96.5-101.638-40 | 106.7-111.842-44 | 116.8-121.946-48 | 127-13250-52 | 137.1-142.254-56 |
| Neck | 33-34.313-13.5 | 35.6-36.814-14.5 | 38.1-39.315-15.5 | 40.6-41.916-16.5 | 43.1-44.417-17.5 | 45.7-4718-18.5 | 48.3-49.519-19.5 |
| Arm Length | 81.9-83.232.25-32.5 | 83.8-8533-33.5 | 85.7-8733.75-34.25 | 87.6-88.935.25-35.75 | 89.5-90.836-36.5 | 91.4-92.736.75-37.25 | 93.3-94.6 |
XS
Small
Medium
Large
XL
2XL
3XL
5.11 Tactical Trousers
Short 160–171.5cm | Regular 172.7–184.1cm | Tall 185.4–190.5cm
| Size | Small | Medium | Large | XL | 2XL | 3XL | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Numeric | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 |
| Waist | 76.230 | 81.3 32 | 86.434 | 91.436 | 96.538 | 101.640 | 106.742 | 111.844 | 116.846 | 122.648 | 127.650 |
| Hip | 92.736 1/2 | 97.838 1/2 | 102.940 1/2 | 108.042 1/2 | 113.044 1/2 | 118.146 1/2 | 123.248 1/2 | 128.350 1/2 | 133.452 1/2 | 138.454 1/2 | 143.556 1/2 |
Small28
Medium30 | 32
Large34 | 36
XL38 | 40
2XL 42 | 44
3XL46 | 48
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
5.11 Tactical Belts
Measure around your waist where the belt will sit. If you're between sizes, size up.
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Waist | 24-26 in - cm 61-66 | 28-30 in - cm 71-76 | 32-34 in - cm 81-86 | 36-38 in - cm 91-97 | 40-42 in - cm 102-107 | 44-46 in - cm 112-117 | 48-50 in - cm 122-127 |
XS
S
M
L
XL
2XL
3XL
5.11 Tactical Gloves
Measure across the palm of your hand from where your thumb and index finger meet.
| Size | S | M | L | XL | 2XL |
|---|---|---|---|---|---|
| Men's Palm | 78 mm | 90 mm | 103 mm | 114 mm | 127 mm |
| Women's Palm | 71 mm | 82 mm | 96 mm |
S
M
L
XL
2XL
Trousers Fit Guide

The loosest cut through the seat and thigh, with a straight line down to the leg opening for maximum room to move.

A balanced fit with space to move without feeling baggy — straight through the knee to the leg opening.

A clean, straight line from thigh to ankle with a slight taper at the leg opening for a tidier finish.

Cut close through the thigh and knee, tapering to a slim leg opening for the trimmest silhouette.
Sizing Instructions






