Spanx Longline Medium Impact Sports Top size medium Medium impact for moderately-intense workouts like cycling, HIIT, or hiking Sweat-wicking, breathable, and 4-way stretch ​ Removable cups for modesty Under-bust band prevents rolling and digging in No hardware for a distraction-free workout 87% Nylon, 13% Elastane. Machine Wash Cold, Gentle Cycle. Do Not Use Fabric Softener. Inside Out. Only Non-Chlorine Bleach When Needed. Tumble Dry Low. Do Not Iron.