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5.11 Tactical
SKU: JAU8374 BLK M

5.11 Bastion Jacket

£228.00
VAT Inc
Read our 9.8K reviews
Colour: Black (019)
Size

3 in stock - Next day delivery available

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The Bastion Jacket is a fortress against the elements, featuring a robust 2L (DWR) hard shell, waterproof/breathable (5K/10K) design, and a blood-borne resistant membrane. Insulated with PrimaLoft Silver, it ensures warmth and comfort. Equipped with zippered chest and arm pockets, a hidden sleeve pocket, and internal security loops, it offers secure storage. Adjustable hood, sleeve gaiters, cuffs, and underarm vents manage heat. The jacket is packable with a printed ID compression sock for convenient storage. Conquer the outdoors with style and functionality.

  • 5K/10K waterproof/ breathable_, blood borne pathogen resistant
  • Light insulation in jacket
  • N6 overlays on shoulders/upper back body and upper sleeve for added abrasion resistance
  • Two-way center front waterproof zipper with internal storm flap.
  • Stationary hood with shock-cord adjustment at hood opening and back hood.
  • Inner back neck locker loop
  • Underarm zipper vents
  • Zipper pocket at right and left bicep, additional zipper pocket at wearer's left lower sleeve
  • Loop patch platform on left and right upper sleeves
  • Large hand pockets with waterproof zipper closure
  • Twill tape on zipper pulls to be accessible with gloved hands
  • Articulated sleeves for ergonomic fit
  • Adjustable sleeve openings with Velcro
  • Gusset set inside sleeve cuff to keep cold draft out
  • Adjustable hem with internal shock-cord system
  • Compression stuff sack with ID print provided to pack jacket in when not using
  • Body: 100% nylon plain weave, hardshell 2L, 3.7-oz., DWR finish, BBP resistant
  • Overlays: 100% nylon oxford, hardshell 2L, 5.6-oz., DWR finish
  • Body insulation: 100% polyester Primaloft Sliver Eco, 4.0-oz.
  • Sleeve & hood insulation: 100% polyester Primaloft Sliver Eco, 2.4-oz.
  • Lining: 100% nylon ripstop, 1.7-oz., DWR finish

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.

SizeXSSmallMediumLargeXL2XL3XL
Chest76.2-81.330-3286.4-91.434-3696.5-101.638-40106.7-111.842-44116.8-121.946-48127-13250-52137.1-142.254-56
Neck33-34.313-13.535.6-36.814-14.538.1-39.315-15.540.6-41.916-16.543.1-44.417-17.545.7-4718-18.548.3-49.519-19.5
Arm Length81.9-83.232.25-32.583.8-8533-33.585.7-8733.75-34.25 87.6-88.935.25-35.7589.5-90.836-36.591.4-92.736.75-37.2593.3-94.6
XS
Chest76.2-81.330-32
Neck33-34.313-13.5
Arm Length81.9-83.232.25-32.5
Small
Chest86.4-91.434-36
Neck35.6-36.814-14.5
Arm Length83.8-8533-33.5
Medium
Chest96.5-101.638-40
Neck38.1-39.315-15.5
Arm Length85.7-8733.75-34.25
Large
Chest106.7-111.842-44
Neck40.6-41.916-16.5
Arm Length 87.6-88.935.25-35.75
XL
Chest116.8-121.946-48
Neck43.1-44.417-17.5
Arm Length89.5-90.836-36.5
2XL
Chest127-13250-52
Neck45.7-4718-18.5
Arm Length91.4-92.736.75-37.25
3XL
Chest137.1-142.254-56
Neck48.3-49.519-19.5
Arm Length93.3-94.6

Trousers Fit Guide

Looser Tighter
Relaxed
Relaxed

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

Regular
Regular

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

Straight
Straight

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

Slim
Slim

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

Sizing Instructions

How to Measure
Use your chest, neck, and arm length to find the right size for tops and outerwear. Use your waist measurement — where you actually wear your trousers — for bottoms and belts.

Neck
Measure around the base of your neck, where a collar would sit.

Chest
Measure under your arms and around the fullest part of your chest, keeping the tape parallel to the floor.

Arm Length
Slightly bend your elbow. Measure from the center back of your neck, over the top of your shoulder, and down to your wrist.

Pant Waist
Measure around your natural waistline — where your trousers actually sit, not necessarily your narrowest point.

Hip
Stand with your feet together and measure around the fullest part of your hips, keeping the tape parallel to the floor.

Inseam
Measure from the crotch straight down the inside of the leg to your ankle, or to your preferred trouser length.

Sizing instructions diagram
Measurements are approximate — for the best fit, compare against a similar garment you already own.
5.11 Tactical

5.11 Bastion Jacket

£228.00
VAT Exc

The Bastion Jacket is a fortress against the elements, featuring a robust 2L (DWR) hard shell, waterproof/breathable (5K/10K) design, and a blood-borne resistant membrane. Insulated with PrimaLoft Silver, it ensures warmth and comfort. Equipped with zippered chest and arm pockets, a hidden sleeve pocket, and internal security loops, it offers secure storage. Adjustable hood, sleeve gaiters, cuffs, and underarm vents manage heat. The jacket is packable with a printed ID compression sock for convenient storage. Conquer the outdoors with style and functionality.

Colour

Size

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