Equisafety Please Pass Wide & Slow Air Waistcoat in Yellow. The Equisafety Air Waistcoat is cut to ergonomically fit the body making it comfortable to wear. The Waistcoat features a quality front zip and is adjustable across the back making it ideal for use during summer or winter as it can be adjusted to accommodate a larger winter riding coat and then reduced in size during the summer when less layers are being worn. The Air Waistcoat features Please Pass Wide & Slowly Thank You across that back in bold print and offers two large zipped hidden pockets at the front, which are large enough for car keys, phone and money etc.