Introducing Safariland’s F1 Covert Shirt Carrier to Streicher’s. Performance is integral in every element of this light weight covert/internal carrier. Designed for special missions and undercover details where comfortable all-day wear and maximum concealability are paramount, the 4-way stretch fabric provides unrestricted movement, light weight compression and breathability. The Luxicool® cooling space mesh liner will reduce temperatures by 3-4 degrees for ideal comfort and performance in extreme conditions and heated situations.