Mossimo Racerback Tank Top — Women's Essential Active & Casual Tank
Our racerback tank combines a sporty silhouette with everyday comfort. The fitted cut and stretchy cotton-blend fabric move with you through workouts, errands, or layering under blazers and cardigans. We designed the racerback opening to stay in place during overhead movements and to show off just the right amount of shoulder definition.
We use a 60/40 cotton-polyester blend that stretches in four directions without losing recovery. The cotton base keeps the tank breathable during cardio sessions, while the polyester threads add resilience so the fabric bounces back wash after wash. You won't see loose threads or stretched-out armholes after a month of wear.
Racerback Design & Fit
The racerback cut sits close to the body without binding across the chest or ribs. We tapered the straps to about one inch at the shoulder, wide enough to cover bra straps but narrow enough to stay put during movement. The back panel dips into a T-shape that sits just below the shoulder blades, giving you full arm mobility for overhead presses or reaching into high cabinets.
Sizing & Length
This tank runs true to size with a fitted, athletic cut. The hem falls at hip level on most body types, long enough to cover your waistband during bends and stretches. If you prefer a looser drape, we recommend sizing up one increment. The neckline is a classic scoop that sits about two inches below the collarbone — modest for layering, sporty for solo wear. Many customers style the Mossimo racerback tank with our denim collection for a streamlined weekend look that transitions from brunch to errands.
Care Instructions & Durability
Machine wash this tank in cold water with like colors. We recommend turning it inside out to preserve the exterior finish, though the fabric resists fading even with frequent laundering. Tumble dry on low heat or hang to air-dry — both methods work without shrinking the garment.
Avoid fabric softener, which can coat the polyester fibers and reduce moisture-wicking performance over time. The double-needle stitching at every seam prevents unraveling, and the tagless label eliminates the scratchy interior tag that tends to fray. After fifty wash cycles in our internal testing, the tank retained 95% of its original stretch and showed no pilling along high-friction zones.
Fabric & fit details
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Racerback Tank Top Questions
The tank runs true to size with a fitted, athletic cut. If you prefer a looser fit or plan to layer it over a sports bra with thicker straps, we recommend ordering one size up. The fabric has about 15% stretch in all directions, so it moves with you without feeling restrictive.
Yes, the racerback design and stretchy cotton-polyester blend handle high-impact activities like running, HIIT, and dance cardio. The straps stay in place during overhead movements, and the fabric wicks moisture reasonably well. For maximum support, pair it with a high-impact sports bra underneath.
The tank is pre-shrunk during manufacturing, so you should see minimal shrinkage if you follow care instructions. Wash in cold water and tumble dry on low heat to preserve the fit. In our testing, the garment retained its original measurements after fifty wash-and-dry cycles.
The 5.3-ounce cotton-polyester blend stays opaque even when stretched over high-impact sports bras. Lighter colors like white and dusty rose may show the outline of darker undergarments, but the fabric itself does not become see-through during movement or when damp.
The scoop neckline sits about two inches below the collarbone, which is modest enough to hide most sports bra necklines. The racerback straps are one inch wide at the shoulder, typically covering standard bra straps. Strappy or cross-back sports bras will peek through by design.
Black, white, heather gray, and navy are our most popular layering shades because they act as neutral bases under patterned or sheer garments. Dusty rose and olive add a subtle pop of color without clashing with most wardrobes. All colors are colorfast and won’t bleed onto lighter outerwear.
We do not recommend bleaching this tank, even the white version. The polyester fibers can yellow when exposed to chlorine bleach. Instead, use an oxygen-based stain remover for spot treatment and wash in cold water with a quality detergent to keep whites bright.