Stem Bags are simple sacks that attach to the stem and/or handlebars of a bike. This one in particular uses a Cyberian Cord Lock, a cord lock that allows for opening and closing using one hand while on your bike. They are becoming more prevalent on modern stem bag designs.

Interested in making your own? I occasionally teach sewing classes at Cog Cycles and Yarn, sign up for their newsletter to keep up to date on the next session!

There are also tons of online resources for bags like these! Here’s a few: