Girls 8 16 3 2mm Swell Series Backzip Gbs Wetsuit MOOD INDIGOTRUE Girls Wetsuits Shop the Kids Surf Collection Roxy Buy Girls 8 16 3 2mm Swell Series GBS Back Zip Wetsuit by Roxy Surf 3 2mm Prologue Back Zip Wetsuit for Girls 8 16 Roxy. Ride the tide like there's no tomorrow with this 4 3mm back zip wetsuit of the Swell Series. Featuring durable Stretch Flight neoprene fabric with GBS seams, flexibility and comfort are a given. WarmFlight thermal lining provides the warmth you need to conquer the cold waters.