LINE2design Safety Vest EMS ANSI Polyester Fabric Yellow with Navy Trim-Large Size Vest has a velcro closure on the front and sides to offer the breakaway feature. S-XXL: This is an adjustable vest and the standard size is Large. You can tighten it up to make smaller or loosen in up to go up to XXL 100% ANSI Polyester Fabric. Yellow with Navy Trim. High Visible Reflective Tape. Silk Screen Printing "EMS" on Back and Front. Pockets: 1 clear badge chest, 1 radio, and 2 microphone tabs. Hook and Loop Closure.