Kenny Chesney announced he's expanding his partnership with Costa with five new limited edition sunglasses. A portion of the proceeds will benefit Coastal Conservation Association (CCA).

The partnership, which debuted in 2011 on Chesney's 'Goin' Coastal' concert tour, has raised more than $50,000 for CCA to date.

The five new Kenny Chesney Costa styles include Hammerhead, Caballito, Switchfoot, Hammock and Maya, and will retail from $129 to $199. Each style will feature Kenny Chesney's signature and his palm tree logo inside the frame, and will come in a variety of unique color combinations, including tortoise/light green, black/white and clear/light blue. The sunglasses will be available for purchase at authorized Costa retail outlets and online costadelmar.com/kenny