Peninsula Insulator Shirt Jacket

The 5.11 Tactical Peninsula Insulator Shirt Jacket is purpose-built for personnel who require lightweight warmth without sacrificing tactical functionality or professional appearance. Designed for law enforcement, military, security, and outdoor professionals, this hybrid insulator bridges the gap between cold-weather mobility and operational readiness. The shirt jacket construction delivers versatile layering capability for dynamic environments where bulk compromises performance and situational awareness remains non-negotiable.

The Peninsula Insulator Shirt Jacket features PrimaLoft Black Series insulation, a synthetic alternative that provides exceptional warmth-to-weight ratio while maintaining compressibility and breathability during high-exertion activities. The insulation is paired with durable polyester heather mini ripstop fabric with plain weave overlays and a Durable Water Repellent (DWR) finish, creating a lightweight yet resilient outer shell resistant to moisture, abrasion, and field wear. This material combination weighs just 1.29 pounds, ensuring the jacket won't impede movement, equipment access, or tactical gear integration while delivering measurable thermal retention in variable weather conditions.

The Peninsula Insulator Shirt Jacket suits personnel operating in temperate to cool environments where mid-layer versatility matters—police patrols, tactical team operations, field training, and outdoor security work. The shirt jacket design enables seamless wear over duty wear or under tactical vests without bulk interference, and the DWR finish sheds light precipitation without requiring heavy waterproof treatment that traps heat. Size 2XL ensures proper fit for larger-framed operators requiring full mobility and unrestricted equipment access across chest rigs, plate carriers, and duty gear systems.