Compared to maple or ash, the Guayaibi wood grain is:


It has more



The quality of our hand-crafted bats is closely supervised in every step of the manufacturing process. Only the finest Guayaibi wood is carefully selected and extracted from the Argentinean sub-tropical forests by our experts, then dried, turned and painted in our private facilities using top technology to guarantee maximum quality.

WBSC Approved and MLB approval in the works.  BBCOR automatically approved when bat is solid 1-piece wood.

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"At the end of his playing career, Leslie Mann didn't feel at home in the world of professional baseball. He wanted to chase his Olympic dream and make the game international. After he met the delegates of 21 countries at the 1936 Olympics in Berlin, the International Baseball Federation was born." -

It wasn't until 2006 that the first ever World Baseball Classic was played.  There were many challenges along the way and several different international associations that needed to come together in agreement such as the FEMBA (Federacion Mundial de Beisbol Amateur) , FIBA (Federacion Internacional de Beisbol),  & (AINBA (Associasion Beisbol Amateur) before WBSC put on the first World Baseball Classic.

Today, WBSC has its own regulations and procedures regarding the approval of wood baseball bats.  Guayaibi wood and Southbat were first approved by WBSC in 2012 and more recently received a renewed approval letter by the organization sent directly to our president (See letter below).  Several South and Central American teams that participated in the 2013 World Baseball Classic used Southbat's Guayaibi wood in official game play.

Contact to find out more about our wood and wood bat approval processes.



Over the last few years Southbat has been working to bring the best quality Guayaibi wood bats to the market.  However, that hasn’t been our only goal.  We also have been working with experts in Argentina and within the local government entities in the Argentinean forests to become and remain environmentally sustainable.  This includes finding new ways to minimize our carbon footprint, while accounting for environmental considerations within our financial projections.

Below we outline some of our environmental initiatives.


“Forests make up more than half of the planet’s biodiversity, they play a fundamental role in climate regulation, the maintenance of water flow, soil conservation, and from them we get indispensable goods for survival like food, wood, and medicine..” explained Hernán Giardini, biodiversity coordinator of Greenpeace Argentina.  Hernan's statement is really nothing new.  We have known for years that the conservation of our natural resources is critical if we want to continue to coexist and thrive with our environment.  However, the importance of our forests cannot be downplayed and it is a good reminder of how finite our resources are as evidenced by the following statistic:

According to the Foundation for Sustainable Development in 1914, there were 105 million hectares; since 2005 there is an estimated 33 million remaining hectares of forest.

Essentially the forests of Argentina have decreased by almost three times since the beginning of the 20th century.  This fact is pushing us to figure out how we can more resourcefully allocate the forests of Formosa to meet our needs, while leaving the area in a BETTER state than when we first arrived.


We are working with the government and local Universities to ensure that we curb deforestation in Formosa, Argentina.  Through our various meetings with sustainability experts and officials of Formosa we were able to craft this initial strategy to not only minimize our use of the forest, but to more importantly add to the area's eco-system.

We have borrowed from Ernst and Young’s Framework:

- Mapping out our goals and deciphering how we will arrive at that point
- Initiating the first steps to execute this strategy
- Continuing to monitor and asses our progress

We want to ensure that we leave behind a minimal footprint and a flourishing ecosystem. We believe that we must go past what is merely required, and build something for our future.



“Wood Strength” as defined by Bear Valley Bats for baseball bats is what is commonly known as “Impact Strength.” We differentiate “Wood Strength” from “Wood Hardness,” (as should all makers and consumers of baseball bats) in that “hardness” is the rating of the surface resistance to indentation using the Janka Test. 

“Strength” on the other hand, specifies a wood species’ ability to resist breaking upon impact. A high quality and safe baseball bat should be made of a wood species with a strength rating of no less 43 inches using a 10-pound weight. High Janka ratings often translate into high strength ratings, but this is not always true and it should never be assumed. Many wood species with high Janka hardness ratings are notably brittle with very low strength values. Maple is a prime example of a wood species with a good Janka hardness rating but a very poor strength rating. Janka hardness ratings give a general idea as to how efficient the wood is at transferring energy into a hit baseball. Many argue that once wood hardness reaches a level high enough to eliminate baseball seam indentation, that increased hardness ratings are of no value to the hitter. 

To eliminate seam indentation on the barrels of baseball bats the Janka hardness ratings must reach 1600 to 1800 on average. Very few wood species used for baseball bats reach that hardness level; among those that do are several species of Hickory, Black Locust, and Guayaibi. In December of 2011 and January through April of 2012, Bear Valley Bats tested the strength of Guayaibi wood provided to us by SouthBat. The wood provided was cut into sections of 33” by 3” by ¾” pieces and allowed to dry and acclimate for several weeks. Douglas Fir (Western Inland), one of the most tested wood species in North America was used as the control. Douglas Fir has an average strength rating of 36.  Guayaibi Strength Test Results Our tests of the Guayaibi wood provided to us by SouthBat indicated that the strength was fully adequate for baseball bats. Not only was it fully adequate, but proved to be extremely resistant against breakage.





Based on data from three sources, Guayaibi wood has an average specific gravity of .7 to .8. 

Note that the numbers used to rate wood strength are based on averages, and the values can differ significantly within the same species and even in wood obtained from the same tree.



The average specific gravity of Guayaibi is relatively high. In comparison, White Ash has a rating of .6 and Maple has a rating of .63.

The weight of the harvested Guayaibi wood varies considerably, even after drying.



It should be noted that all the data we have on Guayaibi wood Indicates it has a Janka hardness rating of 1820. Again, the specific gravity for the wood averages between 0.7 to 0.8. This is the same range for most true hickories; therefore, to get Guayaibi wood light enough to make game weight baseball bats, the lightest and most porous selection of the wood must be used. 

Considering the game weight billets that we used to test Guayaibi wood, it is clear that Guayaibi has exceptional strength and durability clearly surpassing that of Maple and White Ash.


Results based on study performed by Forbat Coorporation in 2010. Wood tested for baseball bats only.