In Kith Women’s Proper Form campaign, bike shorts share an ornate, Parisian-inspired setting with chandeliers and classical furniture, while pumps and striped shirting give workout clothes a dressed-up role. These pieces are intended to become part of getting dressed for the day, with as much attention paid to their proportions as to their purpose.
The Fall 2026 collection puts that versatility into practice with the Halsey Halter Plunge Tank, designed for low-impact exercise and styling into the evening. The Loryn and Laenor Layered Bras introduce overlapping shapes, while the Aire Plunge Cross Back Romper and Racerback Romper offer a continuous, fitted silhouette. The Reyna Pleated Track Pant and Lowen II Nylon Track Jacket give those close-fitting pieces something looser to work against.
Underneath the styling are two returning fabric collections with different jobs to do. Introduced for Spring 2026, Studio uses a soft, peached polyester-and-spandex interlock that Kith positions for low-to-medium-impact activity. Enhance has a shinier nylon-and-spandex finish and a more compressive fit, intended for higher-intensity workouts or anyone who prefers a firmer hold. That distinction gives shoppers a useful way to choose between otherwise similar-looking pieces. Kith’s fabric guide explains the construction and intended support of each.
The seasonal palette brings Cedarwood Heather, Caraway and Darkshore into rotation alongside established Kith shades such as Legacy, Void and Essence. Those colors run through familiar four- and six-inch shorts, seven-eighths and full-length leggings, and coordinating accessories. Crew and knee-high grip socks make the Pilates connection explicit, while an active headband adds reflective detailing.
Kith has also been taking the collection’s movement theme into studios, beginning with an Ami Pilates class at Patina Osaka earlier this summer and continuing with a reformer session at Dream Seven Paris. A further class is planned at Sunday Sporting Club in London’s Marylebone, the traditionally referral-only studio founded by Henriette Kristiansen, who will lead the session.
The footwear offering expands through Kith’s partnership with On, with the K-Tech 3 arriving in women’s sizing in Ivory & Storm and Black & Black. Synthetic suede and mesh uppers sit above Cloudzone 99 tooling incorporating CloudTec and a Speedboard. The existing K-Tech 1 and K-Tech 2 also receive seasonal color updates.
Proper Form releases Friday, September 18, at Kith stores and online, with the U.S. online launch scheduled for 11 a.m. Eastern. Prices include $95 for the Halsey tank, $115 for the layered bras and $145 for the rompers.
