5.11 Tactical - Silverwood Flannel Solid Long Sleeves | Blue Mussel
A comfortable midweight flannel built from 100% cotton twill, the 5.11 Tactical Silverwood Solid Flannel in Blue Mussel is a versatile long-sleeve shirt for off-duty wear, plainclothes work, and casual everyday use. The medium-weight construction pairs naturally with jeans or low-vis tactical pants like the 5.11 Icon, giving plainclothes operators and off-duty professionals a clean, understated layer that doesn't read as duty gear. A traditional shirt collar with collar band keeps the styling classic, while chest patch pockets with button closures handle wallet, phone, or small essentials.
The centre front button placket and collar band are finished with 5.11 logo buttons - 4-hole impact-resistant construction that holds up to repeated wear and washing. A sleeve button placket and adjustable button cuffs let you set the fit at the wrist precisely, whether rolled up for warm weather or buttoned down in the cool. Subtle 5.11 branding includes a 5.11 [+] woven label at the wearer's left chest pocket and a small [+] embroidery at the upper back - low-key details that recognise the brand without shouting it.
Features
- 100% Cotton Midweight Twill: 4.13 oz/yd² cotton twill delivers breathable, comfortable wear with genuine flannel weight.
- Traditional Shirt Collar with Collar Band: Classic collar construction with a collar band for a clean, structured neckline.
- Centre Front Button Placket: Full button-front placket with 5.11 logo buttons for traditional styling.
- Chest Patch Pockets with Button Closure: Twin chest patch pockets with button-secured closures for wallet, phone, or small essentials.
- Sleeve Button Placket and Adjustable Cuffs: Adjustable button cuffs let you set the fit precisely or roll the sleeves for warm weather.
- Impact-Resistant 5.11 Logo Buttons: 4-hole impact-resistant button construction holds up to repeated wear and washing.
- Subtle 5.11 Branding: 5.11 [+] woven label at the wearer's left chest pocket and small [+] embroidery at the upper back.
Specifications
- Brand: 5.11 Tactical
- Colour: Blue Mussel
- Style: Long-sleeve midweight flannel
- Body Fabric: 100% cotton twill, 4.13 oz/yd²
- Collar: Shirt collar with collar band
- Placket: Centre front button
- Pockets: Chest patch pockets with button closure
- Cuffs: Adjustable button cuffs with sleeve button placket
- Buttons: 5.11 logo, 4-hole, impact-resistant
- Branding: 5.11 [+] woven label at left chest, [+] embroidery at upper back


5.11 Tactical Shirts for Every Mission
When it comes to outfitting yourself for the day, 5.11 Tactical shirts offer unmatched versatility for absolutely any mission. Whether you need a polished button-up for the corporate office, rugged activewear for training, or a durable combat shirt for tactical operations, 5.11 has perfected their craft. Every shirt in their expansive line-up is top-notch, highly functional and crafted from technology-advanced materials that excel in any environment. From casual tees to high-performance outdoor wear, you can trust this well-respected company to deliver the exceptional quality and reliability you demand.
T-Shirts
The 5.11 Tactical T-Shirts combine comfort, durability, and versatile style. Made from breathable, moisture-wicking fabrics with a premium finish for gym training, weekend casuals, or post-shift knock-offs, these tees keep you ready for any setting. With soft ringspun cotton, including fade-resistant graphic designs, and a clean athletic fit, they provide all-day comfort and everyday reliability.
Polos
The 5.11 Tactical Polos combine professionalism, durability, and functional performance. Made from breathable, snag-resistant fabric with a moisture-wicking finish for office duty, uniform wear, and active shifts, these polos keep you ready for anything. With smart features, including integrated mic loops, and convenient dual sleeve pen pockets, they provide all-day comfort and a sharp appearance.
Button-Ups
The 5.11 Tactical Button-Ups combine comfort, durability, and professional utility. Made from breathable, tough fabric with a moisture-wicking finish for office duty, outdoor exploration, and active fieldwork, these shirts keep you ready for any environment. With smart storage, including hidden document pockets, and a flexible action back, they provide all-day comfort and rugged versatility.
Combat Shirts
The 5.11 Tactical Combat Shirts combine comfort, durability, and protection. Made from breathable, moisture-wicking fabric with rugged ripstop sleeves for abrasion, wear, and tear resistance, these shirts keep you ready for any deployment. With saddle shoulders, including secure bicep pockets, and a seamless underarm gusset, they provide all-day comfort and essential storage.
One Source Tactical Solutions Since 2015
EASY RETURNS
30 Days Return Policy
Fast Dispatch
Within 24 Hours (On Most Items)
Fully Stocked
10,000+ Items Ready to Ship
Australian Owned & Operated
Proud Australian Business

