How to Store Swimwear in the Off-Season: A Step-by-Step Guide

Quick answer

Wash your swimwear with gentle soap, dry it flat in the shade, and store it folded in a breathable cotton bag or pillowcase away from heat, sunlight, and heavy items. Never seal damp swimwear in plastic. For D+ styles like The Triangle Wasabi Sheen Top or The One Paint, keep cups and underwires uncreased so they hold their shape until next season.

When summer ends, your swimwear deserves better than a crumpled ball at the back of a drawer. Off-season storage is where good swimwear either keeps its fit and color or quietly loses both. Heat, sunlight, dampness, and heavy folds are the main culprits, and they affect structured D+ pieces more than simple bikinis.

This guide walks through six storage steps, with a checkpoint or common mistake at each one. The goal is simple: unpack next season and find your swimwear exactly as you left it, ready to wear without stretching, fading, or misshapen cups.

Why off-season storage matters for D+ swimwear

Structured swimwear has more to lose in storage than a basic bikini. Underwires, powermesh cups, and supportive underbands are designed to hold a shape, and that shape can distort if the piece is crushed under heavy clothing or left hanging by its straps for months. D+ styles like The Triangle Wasabi Sheen Top and The Wirefree Glow Top rely on flexible underwire and powermesh or underband support, so how you store them directly affects how they fit when you pull them out again.

Fabric also ages in storage. Chlorine, sunscreen, and body oils left on the suit can weaken fibers over time, while direct sunlight and heat break down stretch. Recycled sculpting fabrics used in pieces like The One Paint and The Rise Black Bottom respond well to a clean, dark, dry environment. The steps below apply to any swimwear, but pay extra attention if your suit has cups, underwire, or a sculpting lining.

• Checkpoint: if your swimwear still smells like sunscreen or chlorine, it is not clean enough to store.
• Common mistake: storing swimwear while still slightly damp, which encourages mildew and odor.

Step 1: Wash every piece before it goes into storage

Rinse and hand wash each piece with a gentle detergent or mild soap in cool water. Pay attention to underbands, cup linings, and the gusset area, where sunscreen and body oils collect. Squeeze gently, do not wring or twist, and rinse until the water runs clear. If you wore the suit in a pool, a thorough rinse matters even more because chlorine residue keeps working on the fabric after you take the suit off.

This step is non-negotiable for structured pieces. The Triangle Wasabi Sheen Top is fully lined with second skin lining and has bagged out seams for a flat finish; trapped residue in those seams can discolor the fabric over months of storage. The same applies to The Crop Glow Top, which uses metallic knit fabric and a hidden underwire bra. Clean first, store second.

• Checkpoint: the rinse water should be clear and odor-free before you stop.
• Common mistake: using regular laundry detergent or fabric softener, which can leave residue that dulls stretch fabrics.

Step 2: Dry flat in the shade, never on a radiator

Lay each piece flat on a clean towel, reshape it gently with your hands, and let it air dry away from direct sun. If you must hang, use a padded hanger and never hang by the straps, because wet fabric is heavier and straps can stretch. Heat is the enemy here: radiators, hair dryers, and hot cars can degrade elastane and warp molded cups.

Give structured tops extra drying time. The Wirefree Glow Top has an underband and a plunging neckline that need to hold their shape, and The One Paint has a hidden in-built underwire bra. Drying these flat keeps the cups and underband from creasing. If the suit still feels cool or damp to the touch after several hours, it is not dry yet.

• Checkpoint: press a dry finger into the thickest seam or cup edge; any coolness means more drying time.
• Common mistake: drying in full sun, which fades prints and weakens stretch fibers.

Step 3: Fold, don't hang, and protect the cups

Once completely dry, fold each piece loosely. For tops with cups or underwire, fold so the cups keep their natural curve rather than being flattened. You can place a small piece of acid-free tissue or a clean sock inside each cup to hold the shape. Bottoms like The 90s Rise Paint Bottom and The Rise Black Bottom fold flat without much fuss, but avoid sharp creases along the bagged out front seams.

If you are storing multiple suits, keep structured tops separate from heavy items. Stacking a one-piece on top of a molded top for months can leave permanent dents. The goal is gentle support, not compression.

• Checkpoint: cups should look rounded, not flattened, when you close the storage bag.
• Common mistake: hanging swimwear by its straps for months, which stretches them out of shape.

Step 4: Choose a breathable container, not plastic

Cotton drawstring bags, pillowcases, and breathable fabric storage bins are ideal. Plastic zip bags and vacuum-sealed bags trap any remaining moisture and can cause mildew or yellowing, especially in humid climates. If you live somewhere damp, add a small silica gel packet to the storage bin, but keep it out of direct contact with the fabric.

Label the bag if you are storing several suits. Next season you will want to find The Triangle Wasabi Sheen Top without unpacking everything. A simple label also reminds you which pieces are limited edition; The 90s Rise Paint Bottom and The Crop Glow Top are both limited edition and will not be re-stocked, so keeping them in good condition matters more than usual.

• Checkpoint: the container should allow a little air movement, not seal the suit in.
• Common mistake: using a vacuum bag to save space, which crushes cups and traps odor.

Step 5: Store cool, dark, and away from heavy items

The ideal spot is a cool, dark drawer or shelf, away from windows, heaters, and damp basements. Sunlight fades prints and colors over time, even indoors. If you are storing in a closet, keep swimwear on a shelf rather than under a pile of winter coats. Heavy weight over months can crease sculpting fabrics and leave permanent marks.

Temperature swings matter too. A garage or attic that freezes and thaws is not ideal for elastane. A bedroom drawer or the top shelf of a closet is usually better. If you must use a storage unit, keep the bag off the floor and away from exterior walls.

• Checkpoint: the storage spot should be dark, dry, and stable in temperature.
• Common mistake: storing swimwear in a bathroom or laundry room where humidity spikes regularly.

Step 6: Check and rotate once mid-season

About halfway through the off-season, open the bag and check for dampness, odor, or creases. This takes two minutes and catches problems before they become permanent. If you notice any musty smell, rewash and dry the piece before returning it to storage. If cups have flattened, reshape them gently with your hands.

This is also a good time to rotate folded pieces so the same crease does not set in for months. Pieces like The One Paint, with its hidden underwire bra and scooped low back, benefit from a mid-season reshape. When warm weather returns, your swimwear should look and feel like it did at the end of last summer.

• Checkpoint: no musty smell, no flat cups, no new sharp creases.
• Common mistake: forgetting about storage entirely until the first beach day, when damage is already set.

Off-season swimwear storage steps at a glance

1. Wash and rinse: Hand wash with gentle soap in cool water, focusing on underbands, linings, and seams. Checkpoint: no sunscreen or chlorine smell remains.
2. Dry flat in shade: Lay flat on a towel, reshape by hand, and keep away from sun and heat. Checkpoint: thick seams and cups feel completely dry.
3. Fold with cup support: Fold loosely and place tissue or a clean sock inside cups to hold their curve. Checkpoint: cups look rounded, not flattened.
4. Bag in breathable fabric: Use a cotton bag or pillowcase, not plastic or vacuum bags. Checkpoint: air can move through the container.
5. Store cool and dark: Choose a stable, dark drawer or shelf away from heavy items and humidity. Checkpoint: no direct sun, no damp walls, no crushing weight.
6. Check mid-season: Open the bag halfway through the off-season to check for odor, dampness, or creases. Checkpoint: rewash and dry if anything smells musty.

Product facts that affect storage

• The Triangle Wasabi Sheen Top: Flexible continuous underwire and powermesh cups for extra shaping, fully lined with second skin lining, with bagged out seams for a flat finish. The underwire and powermesh cups can distort if crushed, so fold gently and add tissue inside the cups before storing.
• The One Paint: Hidden in-built underwire bra and recycled sculpting fabric with a scooped low back. The hidden bra structure needs to stay uncreased; store this one-piece flat or loosely folded on top of lighter items.
• The 90s Rise Paint Bottom: Limited edition, will not be re-stocked, with recycled sculpting fabric and a seamless flat finish. Because it will not be re-stocked, careful storage protects a piece you cannot easily replace if the fabric creases or fades.

Good off-season storage is mostly about three things: clean fabric, gentle folding, and a breathable, dark, dry home. Follow these steps and your D+ swimwear will keep its support and color until the next warm day. For pieces like The Triangle Wasabi Sheen Top or The One Paint, a little care now saves you from replacing a suit you love later.