The classic cycler’s triangle from the ’70s, and a perfect product. It shouts to approaching motorists, and works nearly equally well day or night, where it’s 99 percent as effective as a light. The whole yellow-orange combo works way better in daytime than a tiny blinking light, too; and it’s a reasonable alternative to neon green windbreakers.

Attaches around your waist with a 3/4-inch belt closed with a quick-release buckle. The strap is long enough to figure out ways to attach it to your saddle or saddlebag, too.

Just like its big sib, the mini has a couple of velcro strips sewn on instead of a waist strap.