The Babolat tennis backpacks come in variety of colours and are big enough for 1-2 tennis racquets.
1 large compartment which also has an elasticised pocket. 2 small side pockets.
1 large compartment at the back for your laptop or 1-2 tennis racquets.
A cover for your grip to protect it against the weather.
1 ventilated pocket at the bottom of the bag for shoes or dirtly clothes.