Freemans Sporting Club has added a new silhouette to its lineup of suit jackets and blazers, and it's a boon for men who run hot. The Unstructured Freeman Sportcoat is tailored and cut like a traditional blazer, but is completely unlined and as light as a shirt. Designed with the purpose of dressing men up while keeping them cool, it's built to make those late June weddings a little more bearable. 

"It's utility-minded," says Kent Kilroe, the brand's managing director. "Men want to look nice and they don't want to sweat."

Even though the jacket has fancier elements – it's made in cashmeres and Italian linens, and has camel and horsehair canvas in the chest plate for added shape – it was designed for function. Instead of shoulder pads and structured linings, it has loose, shirt-like sleeves and a side-vent to keep things airy. 

RELATED: How to Wear a Blue Blazer

Kilroe likened the coat's construction to that of the brand's famous cotton shirt jackets, which have gained a cult following since F.S.C. expanded from barbershops into fashion in 2005. Over the years, the designers began experimenting with different weights and silhouettes to expand their outerwear offerings, and sportcoats that straddle formal and casual were a natural progression. Cold weather styles are usually relegated to tweeds and waxed cottons, but Kilroe said spring is when the brand gets adventurous. [Unlined Tailored Sportcoat (shown in Indigo Denim), $825; shop.freemanssportingclub.com]