Your purchases have donated $412,888 to marine science research and education!
Hey, we're Waterlust
We're in business to build a more sustainable world by bringing environmental science into your life in creative ways.
★★★★★
Waterlust is the best!
Great products, great customer service, great mission! Worth every penny.
- Michelle Rumbaut, TX


















Educational resources & donation included with every purchase. Learn more.
Our reversible tops are designed to keep up with all your adventures in and out of the water, whether you’re engaging your inner mermaid at sea or your core on a yoga mat, and everywhere in between!
Kelps represent the largest species of algae in the world, with some, like the giant kelp, exceeding 100 feet (30 meters) in length. Giant kelp is also one of the fastest-growing organisms in the ocean, growing up to 2 ft per day! Gas-filled bladders beneath the kelp’s blades, called pneumatocysts, float the kelp towards the water’s surface, while the holdfasts keep them anchored in place, creating the iconic forest-like appearance.
88% Repreve® RPET (recycled polyester made from post-consumer plastic bottles), 12% spandex
Safe, premium performance yarns: Our high-quality, fully traceable yarns are sourced through sustainable partners in the U.S. These materials meet rigorous chemical safety standards and are independently verified for over 1,000 harmful substances like BPA and PFAS through OEKO-TEX® STANDARD 100 certification.
High-quality, responsible printing: Our products are printed using heat transfer sublimation, a printing technique that is widely considered to be the safest for both workers and the environment. It requires no water, eliminates dye from entering water systems, and minimizes ink and fabric waste. All the inks and dyes we use are also OEKO-TEX® STANDARD 100 certified.
Recycled materials, minimal waste: Our commitment to environmental responsibility starts with sustainable fibers and yarns. We use synthetic yarns made from recycled plastic bottles, which helps remove and repurpose existing plastic.
Learn more about our environmental impact and manufacturing here, and our materials here.
5% of sales will be donated to the Smith Seaweed Ecology Lab at UC San Diego’s Scripps Institution of Oceanography to support their work on kelp forest ecology and restoration.
Orders are lovingly packaged using minimal packaging and eco-responsible materials, and shipped from our wonderful partner warehouse in Pennsylvania within the same or next business day. We’ll email you with your tracking info as soon as your order is shipped.
Learn more about shipping, exchanges and returns here.
Tag us @waterlust to be featured
Kelp forests can be found on over 1/3 of our planet’s coastlines and are home to thousands of marine species, including abalone, crabs, lobsters, fish, sharks, marine mammals, and sea birds. They support commercially and culturally important fisheries, protect coastlines from erosion, and support a large ecotourism industry.
Unfortunately, warming seas, loss of keystone species that keep kelp grazers in check, unsustainable fishing practices, and pollution are causing kelp forests to decline globally.
“Waterlust is helping to support critical student research in the Smith Lab on kelp forest ecology, human impacts, and the effects of global climate on these iconic ecosystems. This work is critical to the development of effective restoration and conservation efforts. We are excited to work with Waterlust to help share our knowledge of and passion for our ocean forests!”
Prof. Jennifer Smith
The Smith Seaweed Ecology Lab at UC San Diego’s Scripps Institution of Oceanography
Dr. Jennifer Smith and her team of post-docs, graduate students, researchers, and volunteers study the biology and ecology of kelp to better understand and protect the species and ecosystem it creates. Currently, they are examining the effects of thermal stress at the cellular and organismal levels of various kelp species in hopes of identifying genetic variants that may help kelp be more resilient on our warming planet. Thermally resilient individuals will be stored in a living seed bank for restoration efforts in areas that may be exposed to marine heat waves in the future.
I love this top. I am a 66 year old with a shoulder injury. I can get into and out of this top without any assistance. That's golden.
The top is beautiful. I wash it by hand and hang it to dry (out of the sun), this way it will last a long time.
I was not sure what to expect from this top. I am accustomed to high structural support in sports tops and bras. However, I really have no complaints about this top. I can't speak on high impact sports (running, etc) but going shopping and yoga, nothing moved and always felt supported. It fits more like squishing them to you, which really isn't a bad feel at all. It is reversible, and the dark green color with the kelp line work is beautiful. I am considering buying more to make these my everyday bra. The only downside, is the racer back style. If you're not accustomed to the pressure the back could at times put on the neck, it may not be for you.
Love the option of bold or blend in. Fits true to size chart.
Purpose-Driven, Family-Run
Advocate for Marine Conservation
Donate to Research + Education
Eco-Responsible
Notify me when available
We will send you a notification as soon as this product is available again.
We don't share your email with anybody