The vib series is a very popular range of yeti bags with the finest possible european goose down filling wrapped in a casing with a wealth of technical details like full down collar and h box construction the outer fabric is breathable and water repellent ndash and the inside lining has the vib series trademark signal colour pack size is very small making the vib 250 the choice when you want to carry as little as possible but still get full cold protection about crystal down when