Frequently Asked Questions

Kestos offers fluid-state performance swim and active sets engineered to perform in both land and water — swim, run, train, and more without switching outfits.

It’s apparel designed to move seamlessly between activities — from swimming and paddling to beach runs or yoga — with a single multifunctional set.

Kestos leverages the brand’s century-old crossover support geometry originally developed in 1925, now reengineered into modern active + swimwear construction.

Yes. Kestos sets are designed for both swimming and workouts, with quick-drying, supportive materials that perform in and out of the water. For best results, rinse after swimming and let dry before extended wear.

They contain no wires or clasps, providing a comfortable, secure fit without sacrificing style or support. You can swim, move, and transition to beach-to-land activities with confidence.

Yes! The swim tops come with removable, low water-absorption cups, so you can adjust your coverage and shape to suit your mood. Keep them in for extra support or take them out for a sleek, minimal look, whatever feels right that day.

Yes. Every Kestos swimsuit is tested and certified for UPF 50+, so you can run, swim, or lounge by the pool with confidence.

Kestos swimwear is made to move with you in water, including chlorinated pools. While our high-quality fabrics are durable and retain their shape, chlorine is a strong chemical that can gradually affect stretch and color over time. To keep your set looking and feeling its best, rinse it in fresh water and let it dry thoroughly after each swim.

Rinse after every swim, hand wash gently in cool water with mild detergent, and lay flat to dry in the shade. Do not wring or twist your swimwear. Avoid bleach, fabric softeners, and heat to keep your set looking and feeling its best.

To ensure your Kestos pieces are ready for your next getaway, always make sure they are 100% dry before tucking them away—trapped moisture is the primary cause of mildew and lost elasticity.

For long-term storage, we recommend laying your swimwear flat in a cool, dry place away from direct sunlight. Avoid hanging your suits, as the constant tension can stretch the straps and distort the silhouette over time. For the best results, use a breathable fabric pouch rather than a plastic bag; this allows the fibers to breathe and prevents the breakdown of the delicate elastic.

Kestos swimwear is made to keep up with you. With a little care—rinsing after swims, gentle hand washing, and drying flat in the shade—your suit can stay vibrant, stretchy, and ready for many seasons of dips, adventures, and poolside lounging. Think of it as swimwear that’s in it for the long haul.

While you can, we recommend caution. The high heat and concentrated chemicals in hot tubs can break down elastic fibers and fade colors much faster than a standard pool. If you do take a dip, be sure to rinse your suit in fresh, cool water immediately afterward to flush out any harsh chemicals.

Our swimsuits are made with recycled polyamide, a high-performance yarn created from pre-consumer factory waste. This reduces the need for new raw materials, minimizes waste, and lowers the environmental impact compared to conventional fabrics.

Yes. The lining uses a second-skin polyamide blend that is soft, smooth, and optimized for moisture management, keeping you dry and comfortable.

Absolutely. The fabric is high-performance, chlorine-resistant, and engineered for longevity, making it perfect for frequent swimmers and outdoor conditions.

You have 45 days from the date of purchase to return or exchange items from Kestos. To start, email hello@kestos.com and we’ll send you a prepaid return label. Print it, attach it to your package, and drop it off with the designated carrier.

Key points:

• For exchanges, the entire set must be returned.
• Do not combine items from multiple return requests in one package.
• Returns and exchanges are only for U.S. orders.
• Shipping and tariff fees are non-refundable.
• Items marked “final sale” cannot be returned or exchanged.
• Items being returned must have their tags and hygienic liner attached.
• If an item arrives damaged or defective, contact hello@kestos.com for assistance.

For returns within the US, yes! Unfortunately, we cannot accept returns from outside the US at this time.

To make sure your return is processed and refunded correctly, please only send back the items linked to the provided return label. If you wish to return other items, whether from the same order or a different one, please submit a separate return request.

We’re finalizing self-service return tracking — details will be available here soon. For now, email hello@kestos.com with your return request for updates.

Refund timing will be confirmed in your return confirmation email once your return is received and inspected. For questions about a return you’ve already sent, contact hello@kestos.com.

Please refer to our detailed size chart on each product page. Measure your bust, waist, and hips for the most accurate fit.

If you’re between sizes, choose the larger size for tops and the smaller or larger size for bottoms depending on your preferred fit. Kestos fabrics stretch and move with your body, and our 45-day risk-free return policy ensures you can find the perfect fit with confidence.

We offer exchanges and returns for size issues within 45 days of purchase. See our Returns & exchanges section for full instructions.

At this time, Kestos swimwear is designed for our current size range. We carefully focus on fit and support within these sizes, and we’re always exploring ways to serve more body types in the future.

No worries—we’ve all been there! Just send us an email at hello@kestos.com, and we’ll help you pick the best fit. Or, if you’d like, a gift card is a great way to let her choose her perfect size herself.

Our team fulfills orders quickly, and orders cannot be changed once they have been placed.

Shipping is free for all orders within the US.

Once all your items are in stock, we’ll get your order on its way within 2–3 business days—so you won’t have to wait long!

Your order will ship from one of our domestic warehouses in the U.S.

Yes! Shipping options and fees are shown at checkout. Duties and taxes are not included and are the customer’s responsibility. Orders may experience delays due to customs clearance.

Once your Kestos order ships, you’ll get a confirmation with a tracking number so you can follow it right to your door! Orders take 1–3 business days to process, and shipping times are estimates, listed in business days since carriers don’t normally deliver on weekends or holidays.

Sometimes carriers mark packages as “Delivered” before they actually arrive. Please:

• Wait up to 5 business days from the delivery date.
• Check entrances, mailrooms, garages, and around your property.
• Ask neighbors or building staff if they received it by mistake.
• Confirm your shipping address is correct.

If your package still hasn’t arrived after 5 days, contact hello@kestos.com for assistance. Our team will respond within 1 business day.

We’d love to hear from you. Email us at hello@kestos.com. Our Customer Service team is available Monday–Friday, 9am–6pm PST.

If your Kestos product arrives damaged, contact us within 7 days of delivery with photos. We’ll work with you to repair, replace, or refund the item.

We accept all major credit cards as well as additional payment options like PayPal, Apple Pay, and Shop Pay. A full list of accepted methods is shown at checkout.