The interior of the 1GK USA is a bit more mixed in terms of quality than the exterior is. However, the materials used are explicitly designed to increase the ball’s responsiveness-likely to make up for its uncommon rolling and flight patterns due to the butyl fins. Still, aside from being the only hand-sewn ball, this is also the only ball made with a latex bladder on our list. The potential downside is the cotton lining which will get heavy when wet-though it is much softer and provides better responsiveness than either polyester or nylon.
This is a size 5 ball that can withstand an intense practice sessions and heated soccer matches. It has the highest FIFA rating which assures its users of its quality. To further ascertain its quality, this match ball has passed through a series of tests. These check to see whether its weight, shape, water uptake, and size retention are up to par. The casing uses PU and panels are hand stitched which sees to it that the ball holds together match after match. The latex bladder facilitates its high rebound characteristics.
The Obsidian 5 has trademark graphics paying tribute to the USA national team. It is a prestigious soccer ball to add to your soccer equipment if you love buying anything US. The material used is 12% EVA, 13% polyester, 15% polyurethane and 60% rubber. These top-quality materials ensure great performance and excellent ball control to help improve your playing skills in the field. The material is durable enough to handle day to day use, and machine-stitched construction reduces water absorption while equally ensuring durability. It has a rubber bladder that enhances air retention and shape.
So it is now clear to you that you won’t have to worry about the air retention capability, durability. 

Now, how good is the playability? Well, in terms of rebounding, this ball performs almost like a standard ball but obviously not exactly like standard balls. Having said that, we must say the rebound is enough for recreational play and practicing purpose. You will also find this ball a bit heavier than standard balls during the shots. That is why we don’t suggest you use this option for tournament play.

Ok i have read some of the negative reviews and i am sure there is the occasional faulty ball or the person who thinks they are buying a "regular match soccer ball"... that is not what this ball is designed for. It is an "ultra-durable" and nearly indestructible soccer ball. I have been buying these for 4 years and i give them away especially in Nicaragua. I would venture to say these balls are not designed for normal use in the USA on a manicured field... the flight, the touch is a little different... but if you play on hard surfaces, rocky roads, near barbed wire fences, in environments such as Nicaragua and other countries this is the best ball you can buy. I took my first ones to Nicaragua and left them and one was played with nearly every day for three years by some kids in a local
Furthermore, cleaning the ball is a very important task that you must do on a regular basis. It could help you avoid water absorption issues, and it will help make it last longer. Clean a soccer ball with some mild soap and lukewarm water to maintain its performance. Don’t use harsh cleaning agents as this might damage the ball’s construction material. Storing the ball in low temperatures is ideal to avoid warping or water retention. https://www.youtube.com/watch?v=_TX8dExPIWc
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