The boutique accessories line Want Les Essentiels de la Vie has a complicated name, but its bags, wallets, and cases are seductively simple. The latest creation from Dexter and Byron Peart, the Montreal-based twin brothers who launched the brand in 2006, is a backpack called the Kastrup made from organic cotton and leather that reflects the same mid-century design principles found in all their products. Take it on a business trip, to the office, or for a weekend getaway—it's the ultimate go-anywhere carryall.
Backpack ($495) by Want Les Essentiels de la Vie, at mrporter.com. Shirt ($795) by Maison Martin Margiela. Pants ($480) by Marni. Sunglasses ($310) by Garrett Leight California Optical.
—The Details editors