Tranquil High-Rise Briefs

PRISM2's brown Tranquil briefs are cut from sweat-wicking, chlorine-resistant jersey that's woven using a 3D knitting technique, then dyed using an extensive eco-friendly process. They're made with a flattering high-rise waist and low-cut legs.

• 90% polyamide, 10% elastane

PRISM was launched in 2009, by founder/creative director Anna Laub – an ex-style editor – born out of a desire for optical glasses that were both fashionable and functional.