SnapMyGym
Cast iron, competition, and adjustable — which to buy first.
Single-cast powder-coated bell with a chalk-friendly handle — the enthusiast pick.
Solid one-piece cast-iron kettlebell with a wide, flat base. The Amazon value default.
Vinyl-coated entry kettlebell for beginners doing swings, goblet squats, and carries.
Enamel-coated cast-iron bell with a smoother handle than bargain options.
Dial-adjustable kettlebell spanning 8 to 40 lb — six bells in one footprint.
A 16kg (35lb) is the classic starting bell for most men and a 8–12kg for most women. It is heavy enough to learn the hip-hinge swing without being unmanageable.
Cast iron for value and general fitness. Competition (uniform-size) bells if you want consistent technique as you progress or plan to compete in kettlebell sport.
Coated/competition bells tolerate the occasional drop better than bare cast iron, but no kettlebell is a "drop" tool. Use a mat and set the bell down under control.