Aggressive inline roller blader grind on the rail Photography by Dimitar Hristov - 54ka active activity aggressive athlete background balance blader blades blading boots boy close-up danger dangerous equipment exercise extremal extreme feet fishbrain fun GOLOKA grind grinding in-line legs leisure lifestyle modern outdoor outdoors park rail recreation roll roller rollerblader rollerblading rollerskating skate skatepark skater skates skating slide sliding sport summer trendy trick wheels white youth