Trust Me I'm A Mechanical Engineer Mechanic This wrench mech auto design is for an engineer or engineering student in your family. Great to wear while working on machinery and fixing heavy equipment such as tractors and trailers. Mechanic Clothing perfect for a Mechanical Engineer, Auto or Aircraft Mechanic who really enjoys Designing Power Producing Machines. 16” x 16” bag with two 14” long and 1” wide black cotton webbing strap handles. Made of a lightweight, spun polyester canvas-like fabric. All seams and stress points are double-stitched for durability, and the reinforced bottom flattens to fit more items and hold larger objects. Spot clean/dry clean only.