Lululemon Wave Wanderer Swimsuit. Open-backed one-piece with skinny shoulder straps that stay put, so you can dive in head first. Esca fabric is four-way stretch with UV protection and Xtra Life Lycra® for improved chlorine and salt resistance. Has four-way stretch and UV protection. Water flow: Mesh fabric panel for water flow Leg opening: High-cut leg Coverage: Medium bum coverage keeps your assets under wraps Size 4, Preowned, in excellent condition.