In recent years, REI has been expanding their offerings to include more sizes for women's apparel.  It's great that they've been including women of all shapes and sizes for outdoor apparel and activewear.

I still find it very difficult to find a sports bra that fits from REI.  They don't seem to sell much in a size 30 band.  For women with a small band size and D+ cup size, the selection is very limited.  When I've made purchases that use letter sizing, the XS band is still too big and the cups are too small.

I hope that REI will consider adding small band, large cup size sports bras in the future.  Many women who are properly fitted for bras and wear their true size (vs a "sister size") fit into this size category.  I would much rather give REI my business (than have to shop elsewhere) because they are a company that lives up to its values and mission.