Mossimo Supply Co Tank Top — Everyday Essential Fit
We built this tank top for the guy who values straightforward comfort and clean lines. The Mossimo Supply Co tank top delivers that relaxed athletic fit you reach for when the temperature climbs or when layering under an open shirt.
We start with a midweight cotton jersey knit — dense enough to avoid sheerness, light enough to breathe in warm weather. Every tank goes through a preshrink wash cycle before it reaches you, so the fit you try on in the store is the fit you keep after the first laundry cycle.
Sizing & fit guide for layering or solo wear
How the fit works
We cut this tank with a contemporary athletic silhouette — not the boxy oversized fit of vintage gym tanks, and not the compression-tight profile of performance base layers. The chest and shoulders offer enough room for natural movement, while the side seams taper gently to avoid excess fabric bunching at the waist.
Layering under shirts
The slightly dropped armhole and trim side profile let this tank disappear under button-downs and casual shirts without adding bulk. We recommend ordering your usual T-shirt size — the cotton jersey has just enough give to accommodate different body shapes without requiring you to size up. If you typically wear our crew neck tees, the same size will work here.
Care instructions & fabric longevity
Machine wash this tank in cold water with like colors — the preshrunk cotton holds its size, but hot water can still cause gradual tightening over many cycles. We recommend tumble drying on low heat or line drying to extend the life of the ribbed trim at the neck and armholes.
The double-needle stitching at the hem and armholes resists unraveling, even after dozens of washes. Avoid using bleach on heathered or darker solid colors, as chlorine bleach can cause uneven fading. If you’re washing a brand-new tank for the first time, wash it separately or with other dark items to capture any residual dye that might transfer.
Fabric & fit details for this tank
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Tank top questions — fit, fabric, and care
These tanks are preshrunk and garment-washed before they reach you, so shrinkage is minimal. You may see up to half an inch of length change after the first wash if you use hot water and high heat in the dryer. We recommend washing in cold water and tumble drying on low to maintain the original fit. After that first cycle, the size stays consistent through repeated washing.
The crew neck tank features a rounded ribbed neckline that sits higher on the collarbone — better for layering under shirts without showing the tank underneath. The V-neck version has a deeper front opening that creates a more casual look when worn solo. Both use the same cotton jersey fabric and athletic side-seam cut. Choose the crew neck if you plan to layer it under button-downs, or the V-neck if you’re wearing it as an outer layer in warm weather.
Yes, the breathable cotton jersey and unrestricted armhole cut make this tank suitable for light to moderate workouts. The fabric wicks moisture reasonably well for cotton, though it’s not a technical performance fabric. Many customers wear this style for weightlifting, casual cardio, and outdoor summer activities. If you’re planning high-intensity interval training or running in very hot conditions, you might prefer a moisture-wicking synthetic blend instead.
Order your usual T-shirt size. If you typically wear a medium in our crew neck tees, a medium tank will fit the same through the chest and shoulders. The cotton jersey has a small amount of stretch, so the fit accommodates different body shapes without requiring you to size up. For reference, a size large measures approximately 22 inches pit-to-pit and 29 inches from shoulder to hem. If you prefer a looser fit for solo wear, consider going one size up.
No, the midweight cotton jersey is opaque enough to wear as an outer layer. You won’t see skin tone or chest hair through the fabric, even in lighter colors like white or heather gray. The fabric weight strikes a balance — thick enough to avoid sheerness, but light enough to stay breathable in warm weather. This makes the tank versatile for both layering under shirts and wearing solo during summer.
We accept returns within 90 days of purchase as long as the item is unworn, unwashed, and still has tags attached. If you ordered online, you can return the tank by mail using the prepaid return label included in your shipment, or bring it to any of our retail locations. Refunds are processed within five to seven business days after we receive the return. If you’re between sizes or unsure about fit, we recommend ordering two sizes and returning the one that doesn’t work.
With proper care, these tanks remain in good condition for dozens of washes — typically 50 or more cycles before you see significant fading or fabric thinning. The double-needle stitching at the hem and armholes resists unraveling, and the ribbed trim holds its elasticity longer than older tank designs. Washing in cold water and avoiding high heat in the dryer extends the lifespan. Many customers report wearing the same tank for multiple seasons before needing a replacement.