Puma evopower 4 astro turf trainers junior the puma evopower 4 astro turf trainers are ideal for using on indoor courts or hard outdoor surfaces for comfort and support whilst playing the trainers feature a padded ankle collar and cushioned insole for a supportive and comfortable feel under the foot when moving around the court the lace up fastening ensures a secure fit whilst the puma branding down the side of the trainers ensures an instantly recognisable look whilst playing traine