Setup, Compatibility & Care
To ensure your New Balance 603 trainers last, start by adjusting the lace tension to match your foot shape—ensure it is snug across the midfoot without restricting circulation. The shoes fit true to standard athletic sizing but offer a wider footprint, which is helpful if you typically require a bit more toe-box room. For care, avoid submerging the shoes in water. Instead, use a soft, damp cloth to gently wipe the mesh and suede surfaces. If the shoes become damp, allow them to air dry naturally away from direct heat sources, such as radiators, which can warp the materials.