Philipp Kohlschreiber is wearing new summer collection Wilson in Rome. An orange based version of this look is planned for Roland Garros but I do LOVE this ace of a flint grey and lime combo.
The so-called "Well-Equipped Crew" and short are made of ultra light, liquid stretch fabric and zoned mesh which work to keep you well cooled. I'd like this top with white or black shorts even better. The polo, left is a more conservative option.
Find it at Wilson.com, Tennis-Warehouse and Wilson tennis retailers worldwide.