Boyshort Swimsuit Bottom Black Boston Proper Keep calm and stay comfortable

Keep calm and stay comfortable in our Long Sleeve Top

One of our most sought-after styles for a reason

but also machine-washable for everyday ease

Channel your inner Parisienne with our high-cut French briefs with full coverage in soft stretch lace

Supima® cotton isn't just softer—it's smarter

Boyshort Swimsuit Bottom Black Boston Proper Keep calm and stay comfortableReady to swim in something made with lifes waves in mind? Now you can, in more of our best selling underwear styles, now translated into Swim! Our Boyshort Swim Bottom features everything you love about this staple silhouette, but beach ready. Double lined and made with supportive, recycled fabric that stretches to fit you, its designed for the confidence that comes with feeling good in your skin.