The Mackie One Piece

Our bikinis are designed with a flattering, fit and sold as separates, so you can choose your own top and bottom size.

Between sizes? We recommend sizing based on your measurements & checking the fit notes. If you’re unsure, reach out and we’ll help you find your best fit.

Because each piece is handmade, slight variations may occur

We don’t choose fabrics just because they’re trendy. We choose them because we believe what touches your skin matters.

Our recycled swim fabrics are made from recycled yarn and are OEKO-TEX certified.

Care:
For swim, hand wash cold and hang to dry.

Because some of our fabrics are made from recycled or natural fibers, slight variations in color or texture can occur. We think those little differences are part of what makes a handmade piece yours.

Please allow 4–6 weeks for production before your order ships.

Once your piece is finished, you’ll receive tracking information when it heads your way.

Effy was created because we wanted another option, clothing and swimwear that feels feminine, fun and beautiful without relying on disposable fashion or boring “sustainable” basics.

We work with materials including:

OEKO-TEX Certified Cotton
Our clothing uses 95% cotton + 5% spandex. It’s soft, comfortable and has that worn in, vintage tee feeling we love.

Recycled Swim Fabric
Our swim fabrics are made with recycled yarn giving existing materials another life rather than relying solely on virgin resource

Merino Wool
For select pieces, we use merino wool for its natural properties, softness and versatility.

✓ OEKO-TEX® Certified Fabrics
Our fabrics are OEKO-TEX® certified, meaning they have been tested for harmful substances according to the applicable OEKO-TEX standard.

No greenwashing
Just thoughtful materials, small batch & made to order production and a constant effort to make better choices for fashion