Callaway Big Bertha B21 Irons - Steel Shaft

The Callaway Big Bertha B21 Irons are the first Big Bertha irons designed using Artificial Intelligence (A.I.). Callaway designed their Big Bertha shaping with a new formula for distance and forgiveness. It’s a technology package that delivers more ball speed, higher launch and straighter shots for a new level of player confidence.

It features a confidence inspiring shape that makes Bertha easy to hit, with generous offset, wide soles and a thick topline. This is the first time that Callaways A.I. designed Flash Face Cup is in a Big Bertha Iron. They have created high balls speeds and increased spin robustness off of every club in the set, with a unique Flash Face architecture for each individual iron.

A.I. Flash Face Cup wasn’t the only first in this set. These irons also have a Visible Tungsten Energy Core (VTEC) which deepens the CG to make these irons incredibly easy to launch. Callaway have also provided outstanding feel at impact from their proprietary urethane microspheres. These microspheres are strategically designed to absorb unwanted vibration without reducing speed. In short, you’re getting the iconic shaping that you want to see over the ball with incredible ball speed technologies to get the absolute most out of your swing. 

Features & Benefits:

• Fast Ball Speeds From The First A.I.-Designed Big Bertha Iron
  Callaways industry-leading Flash Face Cup in each club.  They have created high ball speeds and increased spin robustness off of every iron in the set with a sophisticated face architecture that’s unique to every loft. Ball speed is further enhanced by our 360 Face Cup that flexes and releases at impact.
• Amazing Forgiveness From Legendary Big Bertha Shaping
  This club profile that golfers love is engineered to give you more confidence over the ball with noticeably wider soles. For easy launch, lower spin and straighter shots, they have added more offset. Combined with Callaways Flash Face Cup, they have developed a new formula for distance and forgiveness.
• Higher Launch From Our Visible Tungsten Energy Core
  Callaway have added a significant amount of custom tungsten weighting. They can deepen the CG in each iron with extraordinary precision, while still maintaining ball speed in the Flash Face Cup. Now you can get higher launch conditions through the set. 
• Pure Feel From Urethane Microspheres
  Callaways patented urethane microspheres comprehensively absorb unwanted vibration for exceptional feel, while also maintaining fast ball speeds.