Applicable scenarios: running sports, fitness and bodybuilding, cycling sports, hiking and camping, sports outdoor bags. Capacity: 20L or less. Color: 591 light gray with dark blue, 591 light gray with orange, 591 light gray with light blue, 591 light green, 591 royal blue, 591 dark gray with orange, 591 black and white, 591 black and blue, 591 black fluorescent green, 591 black and yellow.