Key Characteristics of Competition KettlebellsStandard Color Coding: The color blue universally denotes a 16 kg weight (approx. 35 lbs) across major kettlebell lifting federations.Uniform Size: The physical size, diameter, and handle thickness remain identical from 8 kg up to 40+ kg.Steel Construction: Unlike cast iron kettlebells, these are made of steel for higher durability and exact weight calibration.Narrower Handle: The handle is designed straight and vertical to minimize grip fatigue and prevent the hand from sliding during high-repetition ballistic movements.