Like its two siblings, CAP0.5 is distinctive, retaining character in name only. Like the best families, each one has a personality, an approach, and only together do they seem to make any sense.

As an engineering achievement, CAP0.5 ranks at the top of the three. As a carry object, it’s in second place. It lays flat when open; it’s 4-sided, preventing rolling; it can be inverted into a tray. Two interior pockets contain zippers that open in opposite directions, reducing the probability of error in leaving one open. Its padding is between CAP1 & CAP2 as well, and it feels like the sweet spot, preventing crushing (glasses case!) while minimizing bulk. The 4-sided-ness means it defaults to resting at a 45º angle when closed, but flat when open.

If the geometry of CAP0.5 feels so intuitive, then why hasn’t anyone else done it?