Versatility is the key word used in the first line of the Convert’s product description.
Removable sleeves and the resulting thermal gilet, explain this well. The fact that the sleeves roll up small enough to fit in one pocket is great.
This leaves a main pocket for food and a separate, zippered security pocket.
The fabric resists rain pretty well but the zippered sleeve openings and fixtures are an obvious weakness when it's pouring down - swings and roundabouts. The fit is suited to less aggressive riding positions, but it's still suitable for riders of all types of bikes.