Common barrel sizes shown across the results include 25 mm, 3/4", 1", 1 1/4" (1.25") and 2".

Heat control options vary widely: some tools offer a few preset settings while others provide many precise steps (examples include 3, 4, 5, 10, 14 and 30 settings). Maximum temperatures in the listings range from around 400°F up to 425°F, and some devices list specific preset temps such as 300°F, 330°F, 355°F, 385°F or 410°F.

Many tools use ceramic and tourmaline finishes (including tourmaline-ceramic combinations) and some use titanium. Descriptions also commonly cite negative-ion or ceramic-tourmaline technology to help reduce frizz and enhance shine.

Common features include automatic shut-off (often 30 minutes), swivel/tangle-free cords, LED temperature displays or digital controls, and extras such as foldable designs, heat-protective gloves or safety stands for easier, safer use.

Options for beachy waves include three-barrel (triple) wavers, single-barrel curling irons, rotating/auto curlers, and multi-function tools that combine waving, curling and straightening capabilities.

Listed cord lengths include 6 feet, 8 feet, 9 feet and 72 inches across different models. Several tools also note travel-friendly features such as dual or universal voltage for use abroad.

Multi-function tools combine straightening, waving and curling capabilities and tend to offer more temperature settings and digital controls (examples cite 14 settings and an LED display), while single-function wavers focus on dedicated multi-barrel designs, faster heat-up and simpler, purpose-built controls.