Nike World Cup Football Jersey Made of Recycled Plastic Bottles

After reading the article on green jerseys and doing some research,i feel that the person behind the idea of this is brilliant as fistly,this helps Nike to
prevent nearly 13 million plastic bottle from entering global landfills. And besides being good for the environmental, the new threads are designed to
keep players drier and help them maintain their optimum core temperature while running around the field for 90 minutes a game (assuming there’s
no extra time).

Secondly,the sides of each jersey huve ventilation zones that comprises as many as 200 minisules holes to allow air circulation,and the
tighter-fitting jerseys are optimized to be more aerodynamic,stretching 10% more than previous uniforms.

Lastly,its styish and it will be a hit as it is
15% lighter than Nike previous jerseys and it helps keeping the wearer dry by drawing sweat to the otside of garment where it evaporates.:):):)

.....................science homelearning......................

About the question,why does salt change the density of the water,my answer is that salt has mass and density is mass/volume.Hence if you add more salt,the mass will increase but the volume remains as salt DISSOLVES and the salt change the density of the water.Now,how about salt effects the density.After doing some research,this is my answer:salt increases the density of the water.
pure water density: 1000kg/m3
salt water density: 1027kg/m3
So this is my post,thank you for reading it:)