New Balance 574 Sonic Welded Available words_Brandon Richard We previewed the upcoming Spring/Summer 2011 New Balance 574 Sonic Welded Pack on Friday. However, several colorways of the seamless runner are available this summer. Amongst those releases are the two colorways we'll show you today. Using New Balance's seamless Sonic Weld technology, the 574 is seen here in black and grey suede colorways. The black pair uses aqua external heel counter detailing, while the grey pair opts for neon yellow. Each pair makes use of a white midsole and black rubber outsole. You can grab both pairs at SNS today. New Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Black Aqua AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon AvailableNew Balance 574 Sonic Welded Grey Neon Available via SNS