Peeling off layers is a rite of passage this time of year, and, to some, it’s even a clear sign that a higher power exists. But don’t get too aggressive with it. There are still plenty of reasons to keep a blazer on call — especially one that’s designed to stand up to the heat. By removing the padding and parts, if not all of the lining, unstructured offerings hold less shape than their more formal counterparts, adding a casual edge that’s often enhanced through details like contrasting underside collars, working cuffs, exposed seams and single-button silhouettes. Most importantly, they also breathe better.

Opting for a version made from hot-weather fabrics like linen cotton blends is an ideal solution for the lazy days ahead. Versions in canvas, and in some cases wool, can work year-round — their relaxed fits makes layering sweaters underneath a much more comfortable proposition. Whatever you decide on, don’t be afraid to wear it in, hard. The best unstructured blazers are built to survive being crammed into carry-ons, tossed on the dock or rolled in the grass. In many cases, they look even better with a wrinkle in the sleeves.

OUR PICKS: Uniqlo Linen Cotton Slim Fit Jacket ($70) | Suit Supply Copenhagen Blue Plain ($349) | Arcteryx Veilance Blazer LT ($499) | Raleigh Denim Slim-Fit Unstructured Linen and Cotton Blazer ($650) | Bogolioli Dover Slim-fit Unstructured Cotton-Pique Blazer ($1,175) | Brioni Unstructured Knitted Wool and Silk-Blend Blazer ($3,145)