Mossimo Tankini Set – Mix-and-Match Swimwear
Our Mossimo tankini combines the coverage of a one-piece with the convenience of a two-piece. The fitted tank top sits just below the waist, offering torso coverage while the low-rise bottoms provide a secure fit through every swim, dive, and lounge session. We built this set with adjustable straps and removable soft cups so you control the support and silhouette.
We use a nylon-spandex blend engineered to resist chlorine, salt water, and UV fade. The tight knit holds its shape through repeated wear and washing, so the tank won't bag out at the waist or lose elasticity at the straps. UPF 50+ protection is woven directly into the fibers, blocking over 98% of UVA and UVB rays even when the fabric is wet.
Sizing and adjustability
The Mossimo tankini runs true to size across standard bust and hip measurements. Adjustable straps let you dial in the torso length: tighten them for a cropped look or lengthen for extra coverage over the midriff. The removable soft cups sit inside interior pockets and can be swapped for your own inserts if you prefer more or less shaping.
Low-rise bottoms feature a wide elastic waistband that sits comfortably on the hips without digging. The leg openings use the same flatlock seam construction as the top, so there’s no binding or chafing when you move. We recommend ordering your usual swimwear size; if you’re between sizes or prefer a looser fit through the waist, size up one.
Care instructions
After each swim, rinse the tankini in cool tap water to remove chlorine, salt, and sunscreen residue. Hand wash with a gentle detergent or run a cold, delicate machine cycle; avoid fabric softener, which can break down spandex fibers. Line dry the set away from direct sunlight—heat and UV exposure weaken elasticity over time.
Do not wring or twist the fabric; gently press out excess water between two towels instead. Store the tankini flat or folded in a drawer, not hung by the straps, to prevent stretching. With proper care, the set maintains its shape and color through dozens of wears.
Fabric & fit details
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Common questions about the Mossimo tankini
The Mossimo tankini is sold as a set, but you can mix the pieces with other styles in our swim line once you own the set. If you need a replacement top or bottom in a different size, contact our customer service team and we can help you find the right piece.
We recommend ordering your usual swimwear size. The set runs true to size, and the adjustable straps give you flexibility in torso length. If you’re between sizes or prefer a looser fit through the waist, size up one. Consult our size chart on the product page for bust, waist, and hip measurements.
The Mossimo tankini includes removable soft cups and adjustable straps, which offer moderate support. Women with larger busts often find the combination of cups and strap adjustment sufficient for casual swimming and lounging. If you need maximum support, consider pairing the bottoms with a different top from our line that features underwire or a built-in shelf bra.
The chlorine-resistant nylon-spandex blend is designed to hold color and resist pilling through repeated wear and washing. Rinse the set in cool water after each swim, hand wash or machine wash on delicate, and line dry away from direct sunlight. Avoid fabric softener and high heat, which can break down spandex fibers over time.
Yes, the four-way stretch fabric and flatlock seams make the tankini suitable for active water sports like paddleboarding, kayaking, and beach volleyball. The adjustable straps and secure waistband keep the set in place during movement. For high-impact activities, you may want to tighten the straps for a snugger fit.
With proper care—rinsing after each swim, avoiding wringing or machine drying, and storing the set flat—the elastic waistband maintains its stretch for one to two full swim seasons. Over time, repeated exposure to chlorine and heat will eventually cause any elastic to relax, but our blend is engineered to resist this longer than standard swimwear fabrics.
We accept returns and exchanges on unworn, unwashed swimwear with original tags attached within thirty days of purchase. If the set doesn’t fit as expected, contact our customer service team to initiate a return or size exchange. Worn or washed items cannot be returned for hygiene reasons.