The North Face Seamless Bra

This racer back sports bra is an ultra-lightweight, mesh-cooled bra base layer; comfortable; stretchy and supportive; wicking; odour-resistant. Reduced seams and no labels lessen abrasion. But although the bra is called seamless, shoulder seams still prominent with potential to create backpack strap rub.

Verdict: Buy it if you want excellent airflow from a cropped top that provides medium support for medium boobs.