With tight seams between the planks, it is difficult for moisture to work its way downward. (thespruce.com)
It's crisp edges and tight seams better match the design of the Moto 360's round case. (androidcentral.com)
Sew side seams with a serger or a zigzag stitch with a loose straight stitch for extra strength (too tight the seam will break when you wear it) (biggirlsguide.com)